| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/11/1968 | Bal | Richert | Placed on restricted list |   |   | Before |
| 4/11/1968 | NYN | Goossen | Activated from disabled list |   |   | Before |
| 4/11/1968 | NYN | Martin,J | Placed on disabled list |   | 4/11/1968 | Before |
| 4/12/1968 | LA | Ferrara | Placed on disabled list |   | 4/12/1968 | Before |
| 4/12/1968 | LA | James,C | Promoted to active roster |   |   | Before |
| 4/15/1968 | Atl | Miller,S | Promoted to active roster |   |   | Before |
| 4/15/1968 | Hou | Cuellar | Placed on disabled list |   | 4/15/1968 | Before |
| 4/15/1968 | Hou | Dukes | Promoted to active roster |   |   | Before |
| 4/15/1968 | NYA | Pepitone | Placed on disabled list |   | 4/15/1968 | Before |
| 4/18/1968 | Cal | Heffner | Promoted to active roster |   |   | Before |
| 4/18/1968 | ChN | Stephenson,Jo | Released |   |   | Before |
| 4/19/1968 | Atl | Torre | Placed on disabled list |   | 4/19/1968 | Before |
| 4/20/1968 | Hou | Adlesh | Placed on restricted list |   |   | Before |
| 4/20/1968 | Hou | Davis | Placed on restricted list |   |   | Before |
| 4/20/1968 | Hou | Miller,N | Placed on restricted list |   |   | Before |
| 4/20/1968 | Hou | Rader | Placed on restricted list |   |   | Before |
| 4/20/1968 | Hou | Walton | Promoted to active roster |   |   | Before |
| 4/21/1968 | Bal | Leonhard | Promoted to active roster |   |   | Before |
| 4/21/1968 | Oak | Lachemann | Promoted to active roster |   |   | Before |
| 4/21/1968 | Oak | Roof | Placed on disabled list |   | 4/21/1968 | Before |
| 4/22/1968 | Bal | Rettenmund | Demoted to reserve roster |   |   | Before |
| 4/22/1968 | Bal | Richert | Activated from restricted list |   |   | Before |
| 4/22/1968 | ChN | Lamabe | Acquired via trade | StL |   | Before |
| 4/22/1968 | ChN | Mikkelsen | Traded away | StL |   | Before |
| 4/22/1968 | StL | Mikkelsen | Acquired via trade | ChN |   | Before |
| 4/22/1968 | StL | Mikkelsen | Demoted to reserve roster |   |   | Before |
| 4/23/1968 | ChN | Hickman | Acquired via trade | LA |   | Before |
| 4/23/1968 | ChN | Hickman | Demoted to reserve roster |   |   | Before |
| 4/23/1968 | ChN | Regan | Acquired via trade | LA |   | Before |
| 4/23/1968 | ChN | Savage | Traded away | LA |   | Before |
| 4/23/1968 | Hou | Adlesh | Activated from restricted list |   |   | Before |
| 4/23/1968 | Hou | Davis | Activated from restricted list |   |   | Before |
| 4/23/1968 | Hou | Miller,N | Activated from restricted list |   |   | Before |
| 4/23/1968 | Hou | Rader | Activated from restricted list |   |   | Before |
| 4/23/1968 | Hou | Walton | Demoted to reserve roster |   |   | Before |
| 4/23/1968 | LA | Regan | Traded away | ChN |   | Before |
| 4/23/1968 | LA | Savage | Acquired via trade | ChN |   | Before |
| 4/24/1968 | LA | Sutton | Promoted to active roster |   |   | Before |
| 4/25/1968 | NYN | Rohr,L | Demoted to reserve roster |   |   | Before |
| 4/26/1968 | Cle | Rohr,B | Acquired via trade | Bos |   | Before |
| 4/26/1968 | Cle | Rohr,B | Demoted to reserve roster |   |   | Before |
| 4/26/1968 | Cle | Romo | Acquired via trade | LA |   | Before |
| 4/26/1968 | Cle | Romo | Demoted to reserve roster |   |   | Before |
| 4/26/1968 | LA | Romo | Traded away | Cle |   | Before |
| 4/26/1968 | Phi | Colton | Promoted to active roster |   |   | Before |
| 4/26/1968 | Phi | Hisle | Demoted to reserve roster |   |   | Before |
| 4/26/1968 | Phi | Money | Demoted to reserve roster |   |   | Before |
| 4/26/1968 | Phi | Pena | Promoted to active roster |   |   | Before |
| 4/27/1968 | Cle | Rohr,B | Promoted to active roster |   |   | Before |
| 4/27/1968 | Cle | Sutherland,D | Demoted to reserve roster |   |   | Before |
| 4/27/1968 | Hou | Coombs | Placed on restricted list |   |   | Before |
| 4/27/1968 | Hou | Dierker | Placed on restricted list |   |   | Before |
| 4/27/1968 | Hou | House | Promoted to active roster |   |   | Before |
| 4/27/1968 | Hou | Morgan | Placed on restricted list |   |   | Before |
| 4/28/1968 | Cal | Locke | Demoted to reserve roster |   |   | Before |
| 4/28/1968 | ChA | Voss | Promoted to active roster |   |   | Before |
| 4/28/1968 | ChA | Williams,W | Demoted to reserve roster |   |   | Before |
| 4/29/1968 | Cal | Rodriguez,A | Demoted to reserve roster |   |   | Before |
| 4/29/1968 | Cal | Weaver | Promoted to active roster |   |   | Before |
| 4/29/1968 | Hou | Coombs | Activated from restricted list |   |   | Before |
| 4/29/1968 | Hou | Dierker | Activated from restricted list |   |   | Before |
| 4/29/1968 | Hou | House | Demoted to reserve roster |   |   | Before |
| 4/29/1968 | Hou | Morgan | Activated from restricted list |   |   | Before |
| 4/29/1968 | Min | Kaat | Activated from disabled list |   |   | Before |
| 4/29/1968 | Min | Ogier | Demoted to reserve roster |   |   | Before |
| 4/30/1968 | Atl | Miller,S | Released |   |   | Before |
| 4/30/1968 | Bos | Gibson,R | Activated from disabled list |   |   | Before |
| 4/30/1968 | Bos | Lahoud | Demoted to reserve roster |   |   | Before |
| 4/30/1968 | Was | Denehy | Demoted to reserve roster |   |   | Before |
| 4/30/1968 | Was | Humphreys | Promoted to active roster |   |   | Before |
| 5/2/1968 | Atl | Guinn | Promoted to active roster |   |   | Before |
| 5/2/1968 | ChA | Boyer,K | Released |   |   | Before |
| 5/2/1968 | NYN | Martin,J | Activated from disabled list |   |   | Before |
| 5/3/1968 | ChA | Melton | Promoted to active roster |   |   | Before |
| 5/3/1968 | Hou | Gladding | Placed on disabled list |   | 5/3/1968 | Before |
| 5/3/1968 | NYN | Frisella | Placed on restricted list |   |   | Before |
| 5/3/1968 | NYN | Shaw | Promoted to active roster |   |   | Before |
| 5/4/1968 | Hou | Browne | Acquired via trade | ChN |   | Before |
| 5/4/1968 | Hou | Browne | Demoted to reserve roster |   |   | Before |
| 5/6/1968 | Hou | Cuellar | Activated from disabled list |   |   | Before |
| 5/6/1968 | NYN | Frisella | Activated from restricted list |   |   | Before |
| 5/6/1968 | NYN | Shaw | Demoted to reserve roster |   |   | Before |
| 5/7/1968 | NYA | Pepitone | Activated from disabled list |   |   | Before |
| 5/7/1968 | Oak | Rudi | Promoted to active roster |   |   | Before |
| 5/8/1968 | Cal | Cimino | Demoted to reserve roster |   |   | Before |
| 5/8/1968 | Cal | Pattin | Promoted to active roster |   |   | Before |
| 5/8/1968 | Cin | Tsitouris | Demoted to reserve roster |   |   | Before |
| 5/9/1968 | Atl | Torre | Activated from disabled list |   |   | Before |
| 5/9/1968 | Cin | Nolan | Promoted to active roster |   |   | Before |
| 5/9/1968 | NYA | Ferraro | Demoted to reserve roster |   |   | Before |
| 5/10/1968 | Hou | Brand | Promoted to active roster |   |   | Before |
| 5/10/1968 | Hou | King | Demoted to reserve roster |   |   | Before |
| 5/10/1968 | LA | Boyer,K | Signed |   |   | Before |
| 5/11/1968 | LA | James,C | Demoted to reserve roster |   |   | Before |
| 5/11/1968 | NYA | Smith,C | Activated from disabled list |   |   | Before |
| 5/11/1968 | Was | Allen,H | Demoted to reserve roster |   |   | Before |
| 5/11/1968 | Was | Jones,S | Activated from disabled list |   |   | Before |
| 5/15/1968 | Bos | Roggenburk | Placed on disabled list |   | 5/15/1968 | Before |
| 5/15/1968 | Cal | Johnstone | Placed on disabled list |   | 5/15/1968 | Before |
| 5/17/1968 | Bos | Wyatt | Traded away | NYA |   | Before |
| 5/17/1968 | NYA | Wyatt | Acquired via trade | Bos |   | Before |
| 5/18/1968 | Hou | Adlesh | Placed on restricted list |   |   | Before |
| 5/18/1968 | Hou | Davis | Placed on restricted list |   |   | Before |
| 5/18/1968 | Hou | Dierker | Placed on restricted list |   |   | Before |
| 5/18/1968 | Hou | Miller,N | Placed on restricted list |   |   | Before |
| 5/18/1968 | Hou | Morgan | Placed on disabled list |   | 5/18/1968 | Before |
| 5/18/1968 | Hou | Watson | Promoted to active roster |   |   | Before |
| 5/18/1968 | NYA | Downing | Placed on disabled list |   | 5/18/1968 | Before |
| 5/19/1968 | Hou | Browne | Promoted to active roster |   |   | Before |
| 5/20/1968 | Hou | Adlesh | Activated from restricted list |   |   | Before |
| 5/20/1968 | Hou | Davis | Activated from restricted list |   |   | Before |
| 5/20/1968 | Hou | Dierker | Activated from restricted list |   |   | Before |
| 5/21/1968 | Cal | Trevino | Promoted to active roster |   |   | Before |
| 5/22/1968 | Was | Hannan | Promoted to active roster |   |   | Before |
| 5/22/1968 | Was | Jones,S | Demoted to reserve roster |   |   | Before |
| 5/23/1968 | ChN | Hickman | Promoted to active roster |   |   | Before |
| 5/23/1968 | Cle | Gramly | Demoted to reserve roster |   |   | Before |
| 5/23/1968 | Cle | Paul | Promoted to active roster |   |   | Before |
| 5/23/1968 | NYN | Collins | Promoted to active roster |   |   | Before |
| 5/23/1968 | NYN | Harrelson,Bu | Placed on restricted list |   |   | Before |
| 5/23/1968 | Was | Epstein | Demoted to reserve roster |   |   | Before |
| 5/25/1968 | Bos | Lonborg | Activated from disabled list |   |   | Before |
| 5/25/1968 | ChN | Reberger | Promoted to active roster |   |   | Before |
| 5/25/1968 | ChN | Tiefenauer | Demoted to reserve roster |   |   | Before |
| 5/26/1968 | Det | Kaline | Placed on disabled list |   | 5/26/1968 | Before |
| 5/26/1968 | NYA | Fernandez,F | Placed on restricted list |   |   | Before |
| 5/26/1968 | NYA | Rodriguez,E | Promoted to active roster |   |   | Before |
| 5/27/1968 | ChA | Kenworthy | Promoted to active roster |   |   | Before |
| 5/27/1968 | ChA | Melton | Demoted to reserve roster |   |   | Before |
| 5/27/1968 | Det | Comer | Promoted to active roster |   |   | Before |
| 5/28/1968 | StL | Granger | Promoted to active roster |   |   | Before |
| 5/28/1968 | StL | Torrez | Demoted to reserve roster |   |   | Before |
| 5/29/1968 | Phi | Wine | Placed on disabled list |   | 5/29/1968 | Before |
| 5/31/1968 | NYA | Barber | Promoted to active roster |   |   | Before |
| 5/31/1968 | NYA | Whitaker | Placed on restricted list |   |   | Before |
| 6/1/1968 | Hou | Rader | Placed on restricted list |   |   | Before |
| 6/2/1968 | Hou | Coombs | Placed on restricted list |   |   | Before |
| 6/3/1968 | Bos | Wenz | Promoted to active roster |   |   | Before |
| 6/3/1968 | Hou | House | Promoted to active roster |   |   | Before |
| 6/3/1968 | Phi | Bedell | Promoted to active roster |   |   | Before |
| 6/3/1968 | Pit | Patek | Promoted to active roster |   |   | Before |
| 6/4/1968 | Oak | Green,D | Placed on restricted list |   |   | Before |
| 6/4/1968 | Was | Epstein | Promoted to active roster |   |   | Before |
| 6/5/1968 | Cal | Johnstone | Activated from disabled list |   |   | Before |
| 6/5/1968 | Det | Mathews | Placed on disabled list |   | 6/5/1968 | Before |
| 6/5/1968 | Oak | Roof | Activated from disabled list |   |   | Before |
| 6/5/1968 | Pit | Hiller,C | Demoted to reserve roster |   |   | Before |
| 6/6/1968 | Bos | Lahoud | Promoted to active roster |   |   | Before |
| 6/6/1968 | Bos | Tartabull | Placed on disabled list |   | 6/6/1968 | Before |
| 6/6/1968 | Phi | Colton | Placed on disabled list |   | 6/6/1968 | Before |
| 6/7/1968 | Hou | Gladding | Activated from disabled list |   |   | Before |
| 6/7/1968 | Oak | Kubiak | Placed on restricted list |   |   | Before |
| 6/8/1968 | Cal | Johnstone | Demoted to reserve roster |   |   | Before |
| 6/8/1968 | Cal | Murphy | Promoted to active roster |   |   | Before |
| 6/8/1968 | Min | Carew | Placed on restricted list |   |   | Before |
| 6/8/1968 | Min | Hall,T | Promoted to active roster |   |   | Before |
| 6/8/1968 | Oak | Pagliaroni | Placed on disabled list |   | 6/8/1968 | Before |
| 6/8/1968 | StL | Hughes | Placed on disabled list |   | 6/8/1968 | Before |
| 6/10/1968 | Cin | Queen | Placed on disabled list |   | 6/10/1968 | Before |
| 6/10/1968 | Oak | Duncan | Promoted to active roster |   |   | Before |
| 6/10/1968 | Oak | Lachemann | Demoted to reserve roster |   |   | Before |
| 6/10/1968 | StL | Mikkelsen | Promoted to active roster |   |   | Before |
| 6/11/1968 | Atl | Carroll | Traded away | Cin |   | Before |
| 6/11/1968 | Atl | Cloninger | Traded away | Cin |   | Before |
| 6/11/1968 | Atl | Davidson | Acquired via trade | Cin |   | Before |
| 6/11/1968 | Atl | Johnson,B | Acquired via trade | Cin |   | Before |
| 6/11/1968 | Atl | Pappas | Acquired via trade | Cin |   | Before |
| 6/11/1968 | Atl | Woodward | Traded away | Cin |   | Before |
| 6/11/1968 | Cin | Carroll | Acquired via trade | Atl |   | Before |
| 6/11/1968 | Cin | Cloninger | Acquired via trade | Atl |   | Before |
| 6/11/1968 | Cin | Davidson | Traded away | Atl |   | Before |
| 6/11/1968 | Cin | Johnson,B | Traded away | Atl |   | Before |
| 6/11/1968 | Cin | Pappas | Traded away | Atl |   | Before |
| 6/11/1968 | Cin | Woodward | Acquired via trade | Atl |   | Before |
| 6/11/1968 | Oak | Kubiak | Activated from restricted list |   |   | Before |
| 6/12/1968 | Cin | Ritchie | Promoted to active roster |   |   | Before |
| 6/12/1968 | NYN | Goossen | Demoted to reserve roster |   |   | Before |
| 6/12/1968 | NYN | Harrelson,Bu | Activated from restricted list |   |   | Before |
| 6/13/1968 | ChA | Snyder | Traded away | Cle |   | Before |
| 6/13/1968 | ChA | Wagner,L | Acquired via trade | Cle |   | Before |
| 6/13/1968 | Cle | Snyder | Acquired via trade | ChA |   | Before |
| 6/13/1968 | Cle | Wagner,L | Traded away | ChA |   | Before |
| 6/14/1968 | Cal | Rodriguez,A | Promoted to active roster |   |   | Before |
| 6/14/1968 | Cal | Schaal | Placed on disabled list |   | 6/14/1968 | Before |
| 6/14/1968 | ChN | Fast | Promoted to active roster |   |   | Before |
| 6/14/1968 | ChN | Hernandez,R | Traded away | StL |   | Before |
| 6/14/1968 | ChN | Hernandez,R | Demoted to reserve roster |   |   | Before |
| 6/14/1968 | Cle | Salmon | Placed on disabled list |   | 6/14/1968 | Before |
| 6/15/1968 | Bal | Howard,B | Traded away | Was |   | Before |
| 6/15/1968 | Bal | Valentine | Acquired via trade | Was |   | Before |
| 6/15/1968 | Cal | Davalillo | Acquired via trade | Cle |   | Before |
| 6/15/1968 | Cal | Hall,J | Traded away | Cle |   | Before |
| 6/15/1968 | Cle | Davalillo | Traded away | Cal |   | Before |
| 6/15/1968 | Cle | Hall,J | Acquired via trade | Cal |   | Before |
| 6/15/1968 | Det | Wyatt | Acquired via trade | NYA |   | Before |
| 6/15/1968 | Hou | Gilson | Acquired via trade | StL |   | Before |
| 6/15/1968 | Hou | Simpson | Acquired via trade | StL |   | Before |
| 6/15/1968 | NYA | Bouton | Demoted to reserve roster |   |   | Before |
| 6/15/1968 | NYA | Wyatt | Traded away | Det |   | Before |
| 6/15/1968 | Pit | Ellis,D | Promoted to active roster |   |   | Before |
| 6/15/1968 | Pit | Wickersham | Demoted to reserve roster |   |   | Before |
| 6/15/1968 | StL | Gilson | Traded away | Hou |   | Before |
| 6/15/1968 | StL | Simpson | Traded away | Hou |   | Before |
| 6/15/1968 | Was | Howard,B | Acquired via trade | Bal |   | Before |
| 6/15/1968 | Was | Valentine | Traded away | Bal |   | Before |
| 6/16/1968 | Bal | Belanger | Placed on restricted list |   |   | Before |
| 6/16/1968 | Cle | Harris | Promoted to active roster |   |   | Before |
| 6/16/1968 | Hou | Davis | Traded away | StL |   | Before |
| 6/16/1968 | Hou | Gilson | Demoted to reserve roster |   |   | Before |
| 6/16/1968 | NYA | Fernandez,F | Activated from restricted list |   |   | Before |
| 6/16/1968 | NYA | Rodriguez,E | Demoted to reserve roster |   |   | Before |
| 6/16/1968 | NYN | Shaw | Promoted to active roster |   |   | Before |
| 6/16/1968 | StL | Davis | Acquired via trade | Hou |   | Before |
| 6/16/1968 | StL | Nelson,M | Promoted to active roster |   |   | Before |
| 6/17/1968 | Bal | Bunker | Promoted to active roster |   |   | Before |
| 6/17/1968 | Det | Cain | Demoted to reserve roster |   |   | Before |
| 6/17/1968 | Hou | Browne | Demoted to reserve roster |   |   | Before |
| 6/17/1968 | Hou | Rader | Activated from restricted list |   |   | Before |
| 6/17/1968 | NYA | Whitaker | Activated from restricted list |   |   | Before |
| 6/17/1968 | NYA | Whitaker | Demoted to reserve roster |   |   | Before |
| 6/17/1968 | NYN | Shaw | Demoted to reserve roster |   |   | Before |
| 6/18/1968 | Det | Green,L | Promoted to active roster |   |   | Before |
| 6/18/1968 | Hou | Coombs | Activated from restricted list |   |   | Before |
| 6/18/1968 | Hou | Coombs | Demoted to reserve roster |   |   | Before |
| 6/18/1968 | NYA | Downing | Activated from disabled list |   |   | Before |
| 6/20/1968 | Bal | May,D | Demoted to reserve roster |   |   | Before |
| 6/20/1968 | ChA | Booker | Demoted to reserve roster |   |   | Before |
| 6/20/1968 | ChA | Lazar | Promoted to active roster |   |   | Before |
| 6/21/1968 | Hou | Coombs | Promoted to active roster |   |   | Before |
| 6/21/1968 | Hou | House | Placed on disabled list |   | 6/21/1968 | Before |
| 6/22/1968 | Bos | Brandon | Promoted to active roster |   |   | Before |
| 6/22/1968 | Bos | Wenz | Demoted to reserve roster |   |   | Before |
| 6/22/1968 | ChN | Reberger | Demoted to reserve roster |   |   | Before |
| 6/22/1968 | Hou | Adlesh | Placed on restricted list |   |   | Before |
| 6/22/1968 | StL | Davis | Placed on restricted list |   |   | Before |
| 6/22/1968 | StL | Wicker | Promoted to active roster |   |   | Before |
| 6/23/1968 | Min | Hall,T | Demoted to reserve roster |   |   | Before |
| 6/24/1968 | ChN | Ross | Promoted to active roster |   |   | Before |
| 6/24/1968 | Min | Carew | Activated from restricted list |   |   | Before |
| 6/24/1968 | Oak | Green,D | Activated from restricted list |   |   | Before |
| 6/24/1968 | SF | Bonds | Promoted to active roster |   |   | Before |
| 6/24/1968 | SF | Brown,O | Demoted to reserve roster |   |   | Before |
| 6/25/1968 | Atl | Guinn | Demoted to reserve roster |   |   | Before |
| 6/25/1968 | Atl | Stone | Promoted to active roster |   |   | Before |
| 6/25/1968 | Bal | Belanger | Activated from restricted list |   |   | Before |
| 6/25/1968 | NYN | Boswell,K | Placed on disabled list |   | 6/25/1968 | Before |
| 6/25/1968 | NYN | Goossen | Promoted to active roster |   |   | Before |
| 6/26/1968 | ChA | Hopkins | Promoted to active roster |   |   | Before |
| 6/26/1968 | ChA | Lazar | Demoted to reserve roster |   |   | Before |
| 6/26/1968 | Was | Casanova | Demoted to reserve roster |   |   | Before |
| 6/26/1968 | Was | French | Promoted to active roster |   |   | Before |
| 6/26/1968 | Was | Holman | Promoted to active roster |   |   | Before |
| 6/26/1968 | Was | Moore | Demoted to reserve roster |   |   | Before |
| 6/27/1968 | Atl | Page | Promoted to active roster |   |   | Before |
| 6/27/1968 | Atl | Valdespino | Demoted to reserve roster |   |   | Before |
| 6/27/1968 | Bos | Oliver,G | Traded away | ChN |   | Before |
| 6/27/1968 | Bos | Pizarro | Acquired via trade | Pit |   | Before |
| 6/27/1968 | ChN | Oliver,G | Acquired via trade | Bos |   | Before |
| 6/27/1968 | Cle | Rohr,B | Demoted to reserve roster |   |   | Before |
| 6/27/1968 | Cle | Romo | Promoted to active roster |   |   | Before |
| 6/27/1968 | Pit | Henry | Acquired via trade | SF |   | Before |
| 6/27/1968 | Pit | Pizarro | Traded away | Bos |   | Before |
| 6/27/1968 | SF | Henry | Traded away | Pit |   | Before |
| 6/28/1968 | ChN | Boccabella | Demoted to reserve roster |   |   | Before |
| 6/28/1968 | ChN | Hartensten | Demoted to reserve roster |   |   | Before |
| 6/28/1968 | ChN | Johnson,L | Traded away | Cle |   | Before |
| 6/28/1968 | ChN | Smith,W | Acquired via trade | Cle |   | Before |
| 6/28/1968 | ChN | Stoneman | Promoted to active roster |   |   | Before |
| 6/28/1968 | Cle | Johnson,L | Acquired via trade | ChN |   | Before |
| 6/28/1968 | Cle | Smith,W | Traded away | ChN |   | Before |
| 6/28/1968 | NYA | Tillotson | Promoted to active roster |   |   | Before |
| 6/28/1968 | Phi | Brown,P | Promoted to active roster |   |   | Before |
| 6/28/1968 | SF | Oliver | Placed on disabled list |   | 6/28/1968 | Before |
| 6/28/1968 | SF | Schroder | Promoted to active roster |   |   | Before |
| 6/29/1968 | Det | Rooker | Promoted to active roster |   |   | Before |
| 6/29/1968 | Det | Warden | Placed on restricted list |   |   | Before |
| 6/29/1968 | Oak | Pierce | Demoted to reserve roster |   |   | Before |
| 6/29/1968 | Oak | Sanders | Promoted to active roster |   |   | Before |
| 6/30/1968 | StL | Hughes | Activated from disabled list |   |   | Before |
| 6/30/1968 | StL | Mikkelsen | Demoted to reserve roster |   |   | Before |
| 7/1/1968 | Bos | Lahoud | Demoted to reserve roster |   |   | Before |
| 7/1/1968 | Bos | Lahoud | Demoted to reserve roster |   |   | Before |
| 7/1/1968 | Bos | Tartabull | Activated from disabled list |   |   | Before |
| 7/1/1968 | Cal | Hamilton,J | Demoted to reserve roster |   |   | Before |
| 7/1/1968 | Cal | Messersmth | Promoted to active roster |   |   | Before |
| 7/1/1968 | Cal | Sherry | Signed |   |   | Before |
| 7/1/1968 | Cal | Weaver | Demoted to reserve roster |   |   | Before |
| 7/1/1968 | Det | Kaline | Activated from disabled list |   |   | Before |
| 7/1/1968 | Hou | Colbert | Promoted to active roster |   |   | Before |
| 7/2/1968 | Hou | Gladding | Placed on disabled list |   | 7/2/1968 | Before |
| 7/4/1968 | Hou | Miller,N | Activated from restricted list |   |   | Before |
| 7/4/1968 | Hou | Murrell | Demoted to reserve roster |   |   | Before |
| 7/5/1968 | Bal | Nelson,R | Placed on restricted list |   |   | Before |
| 7/5/1968 | ChA | Voss | Placed on disabled list |   | 7/5/1968 | Before |
| 7/5/1968 | Cle | Salmon | Activated from disabled list |   |   | Before |
| 7/5/1968 | Cle | Vidal | Demoted to reserve roster |   |   | Before |
| 7/5/1968 | Hou | King | Promoted to active roster |   |   | Before |
| 7/5/1968 | Hou | Watson | Placed on restricted list |   |   | Before |
| 7/6/1968 | Cin | Rose | Placed on disabled list |   | 7/6/1968 | Before |
| 7/6/1968 | Det | Green,L | Released |   |   | Before |
| 7/6/1968 | Phi | Colton | Activated from disabled list |   |   | Before |
| 7/6/1968 | Phi | Colton | Demoted to reserve roster |   |   | Before |
| 7/8/1968 | Hou | King | Demoted to reserve roster |   |   | Before |
| 7/9/1968 | StL | Davis | Activated from restricted list |   |   | Before |
| 7/9/1968 | StL | Wicker | Demoted to reserve roster |   |   | Before |
| 7/10/1968 | ChA | Williams,W | Promoted to active roster |   |   | Before |
| 7/10/1968 | Hou | Adlesh | Activated from restricted list |   |   | Before |
| 7/10/1968 | Min | Killebrew | Placed on disabled list |   | 7/10/1968 | Before |
| 7/10/1968 | Min | Renick | Promoted to active roster |   |   | Before |
| 7/11/1968 | ChN | Elia | Demoted to reserve roster |   |   | Before |
| 7/11/1968 | Cin | McRae | Promoted to active roster |   |   | Before |
| 7/11/1968 | LA | Colavito | Released |   |   | Before |
| 7/11/1968 | Phi | Bedell | Demoted to reserve roster |   |   | Before |
| 7/11/1968 | Phi | Sullivan | Promoted to active roster |   |   | Before |
| 7/11/1968 | Pit | Patek | Placed on disabled list |   | 7/11/1968 | Before |
| 7/12/1968 | Cal | Locke | Promoted to active roster |   |   | Before |
| 7/12/1968 | Cal | Sherry | Demoted to reserve roster |   |   | Before |
| 7/12/1968 | Cal | Trevino | Demoted to reserve roster |   |   | Before |
| 7/12/1968 | Cle | Alvis | Placed on disabled list |   | 7/12/1968 | Before |
| 7/12/1968 | Hou | Dierker | Placed on restricted list |   |   | Before |
| 7/12/1968 | Hou | House | Activated from disabled list |   |   | Before |
| 7/12/1968 | LA | Crawford | Promoted to active roster |   |   | Before |
| 7/12/1968 | NYA | McDaniel | Acquired via trade | SF |   | Before |
| 7/12/1968 | NYA | Monbquette | Traded away | SF |   | Before |
| 7/12/1968 | SF | McDaniel | Traded away | NYA |   | Before |
| 7/12/1968 | SF | Monbouqtte | Acquired via trade | NYA |   | Before |
| 7/13/1968 | Cal | McFarlane | Promoted to active roster |   |   | Before |
| 7/13/1968 | Cin | Beauchamp | Promoted to active roster |   |   | Before |
| 7/13/1968 | Cin | Corrales | Promoted to active roster |   |   | Before |
| 7/13/1968 | Cin | Helms | Placed on restricted list |   |   | Before |
| 7/13/1968 | Cin | Schaffer | Demoted to reserve roster |   |   | Before |
| 7/13/1968 | Hou | Shea | Promoted to active roster |   |   | Before |
| 7/14/1968 | Det | Rooker | Demoted to reserve roster |   |   | Before |
| 7/14/1968 | Det | Warden | Activated from restricted list |   |   | Before |
| 7/14/1968 | Hou | Blasingame | Placed on disabled list |   | 7/14/1968 | Before |
| 7/14/1968 | Phi | Brown,P | Demoted to reserve roster |   |   | Before |
| 7/14/1968 | Phi | Johnson,J | Promoted to active roster |   |   | Before |
| 7/14/1968 | Was | Knowles | Placed on restricted list |   |   | Before |
| 7/14/1968 | Was | Moore | Promoted to active roster |   |   | Before |
| 7/15/1968 | Hou | Colbert | Demoted to reserve roster |   |   | Before |
| 7/15/1968 | NYA | Colavito | Signed |   |   | Before |
| 7/15/1968 | NYA | Downing | Demoted to reserve roster |   |   | Before |
| 7/15/1968 | Pit | Virdon | Signed |   |   | Before |
| 7/16/1968 | Hou | Gilson | Promoted to active roster |   |   | Before |
| 7/17/1968 | Bos | Landis | Placed on restricted list |   |   | Before |
| 7/17/1968 | Bos | Nixon | Promoted to active roster |   |   | Before |
| 7/18/1968 | NYN | Goossen | Demoted to reserve roster |   |   | Before |
| 7/18/1968 | Was | Allen,H | Promoted to active roster |   |   | Before |
| 7/18/1968 | Was | Bowens | Demoted to reserve roster |   |   | Before |
| 7/18/1968 | Was | Casanova | Promoted to active roster |   |   | Before |
| 7/18/1968 | Was | Coggins | Demoted to reserve roster |   |   | Before |
| 7/19/1968 | Bal | Adamson | Promoted to active roster |   |   | Before |
| 7/19/1968 | Bal | May,D | Promoted to active roster |   |   | Before |
| 7/19/1968 | Bal | Morris,J | Promoted to active roster |   |   | Before |
| 7/19/1968 | Bal | Richert | Placed on restricted list |   |   | Before |
| 7/19/1968 | Bos | Roggenburk | Activated from disabled list |   |   | Before |
| 7/19/1968 | Bos | Santiago | Placed on disabled list |   | 7/19/1968 | Before |
| 7/19/1968 | Cle | Klimchock | Promoted to active roster |   |   | Before |
| 7/19/1968 | Hou | Watson | Activated from restricted list |   |   | Before |
| 7/19/1968 | NYN | Connors | Promoted to active roster |   |   | Before |
| 7/19/1968 | NYN | McAndrew | Promoted to active roster |   |   | Before |
| 7/19/1968 | NYN | Stahl | Promoted to active roster |   |   | Before |
| 7/19/1968 | Was | Brinkman | Placed on restricted list |   |   | Before |
| 7/20/1968 | Bos | Brandon | Demoted to reserve roster |   |   | Before |
| 7/20/1968 | Bos | Morehead | Promoted to active roster |   |   | Before |
| 7/20/1968 | Cal | Causey | Acquired via trade | ChA |   | Before |
| 7/20/1968 | Cal | Held | Traded away | ChA |   | Before |
| 7/20/1968 | ChA | Causey | Traded away | Cal |   | Before |
| 7/20/1968 | ChA | Held | Acquired via trade | Cal |   | Before |
| 7/20/1968 | Cin | Helms | Activated from restricted list |   |   | Before |
| 7/20/1968 | Cin | Kelso | Demoted to reserve roster |   |   | Before |
| 7/20/1968 | Cle | Harris | Placed on restricted list |   |   | Before |
| 7/20/1968 | Cle | Scheinblum | Promoted to active roster |   |   | Before |
| 7/20/1968 | Min | Hernandez,J | Demoted to reserve roster |   |   | Before |
| 7/20/1968 | Min | Keller | Promoted to active roster |   |   | Before |
| 7/20/1968 | NYA | Rodriguez,E | Promoted to active roster |   |   | Before |
| 7/22/1968 | ChN | Oliver,G | Placed on disabled list |   | 7/22/1968 | Before |
| 7/22/1968 | NYA | Rodriguez,E | Demoted to reserve roster |   |   | Before |
| 7/22/1968 | NYN | Frisella | Demoted to reserve roster |   |   | Before |
| 7/22/1968 | NYN | McAndrew | Demoted to reserve roster |   |   | Before |
| 7/23/1968 | ChN | Felske | Promoted to active roster |   |   | Before |
| 7/24/1968 | Was | Martin,G | Promoted to active roster |   |   | Before |
| 7/25/1968 | ChN | Elia | Promoted to active roster |   |   | Before |
| 7/26/1968 | ChA | McMahon | Traded away | Det |   | Before |
| 7/26/1968 | ChA | Ribant | Acquired via trade | Det |   | Before |
| 7/26/1968 | Det | Campbell | Promoted to active roster |   |   | Before |
| 7/26/1968 | Det | Matchick | Placed on restricted list |   |   | Before |
| 7/26/1968 | Det | McMahon | Acquired via trade | ChA |   | Before |
| 7/26/1968 | Det | Ribant | Traded away | ChA |   | Before |
| 7/26/1968 | Was | Alyea | Promoted to active roster |   |   | Before |
| 7/26/1968 | Was | Baldwin | Demoted to reserve roster |   |   | Before |
| 7/26/1968 | Was | Bryan | Demoted to reserve roster |   |   | Before |
| 7/26/1968 | Was | Haywood | Promoted to active roster |   |   | Before |
| 7/27/1968 | Cal | Harrelson,Bi | Promoted to active roster |   |   | Before |
| 7/27/1968 | Cal | Wright | Placed on restricted list |   |   | Before |
| 7/27/1968 | Cin | McRae | Demoted to reserve roster |   |   | Before |
| 7/27/1968 | Cin | Rose | Activated from disabled list |   |   | Before |
| 7/28/1968 | Oak | Pagliaroni | Activated from disabled list |   |   | Before |
| 7/28/1968 | Oak | Webster | Demoted to reserve roster |   |   | Before |
| 7/29/1968 | Atl | Causey | Acquired via trade | Cal |   | Before |
| 7/29/1968 | Atl | Davidson | Demoted to reserve roster |   |   | Before |
| 7/29/1968 | Bal | Nelson,R | Activated from restricted list |   |   | Before |
| 7/29/1968 | Bal | Nelson,R | Demoted to reserve roster |   |   | Before |
| 7/29/1968 | Bos | Landis | Activated from restricted list |   |   | Before |
| 7/29/1968 | Bos | Roggenburk | Demoted to reserve roster |   |   | Before |
| 7/29/1968 | Cal | Bennett | Acquired via trade | ChN |   | Before |
| 7/29/1968 | Cal | Causey | Traded away | Atl |   | Before |
| 7/29/1968 | Cal | Rojas | Placed on disabled list |   | 7/29/1968 | Before |
| 7/29/1968 | Cal | Schaal | Activated from disabled list |   |   | Before |
| 7/30/1968 | NYN | Ryan | Placed on disabled list |   | 7/30/1968 | Before |
| 7/31/1968 | Atl | Jackson,S | Placed on disabled list |   | 7/31/1968 | Before |
| 7/31/1968 | Bos | Robinson,Fl | Acquired via trade | Oak |   | Before |
| 7/31/1968 | ChN | Fast | Demoted to reserve roster |   |   | Before |
| 7/31/1968 | ChN | Upham | Promoted to active roster |   |   | Before |
| 7/31/1968 | Hou | Dierker | Activated from restricted list |   |   | Before |
| 7/31/1968 | Hou | Gilson | Demoted to reserve roster |   |   | Before |
| 7/31/1968 | LA | Alcaraz | Demoted to reserve roster |   |   | Before |
| 7/31/1968 | LA | Shirley | Promoted to active roster |   |   | Before |
| 7/31/1968 | Oak | Bogle | Promoted to active roster |   |   | Before |
| 7/31/1968 | Oak | Robinson,Fl | Traded away | Bos |   | Before |
| 8/2/1968 | ChA | Cullen | Traded away | Was |   | Before |
| 8/2/1968 | ChA | Hansen | Acquired via trade | Was |   | Before |
| 8/2/1968 | Cle | Harris | Activated from restricted list |   |   | Before |
| 8/2/1968 | Cle | Scheinblum | Demoted to reserve roster |   |   | Before |
| 8/2/1968 | NYN | McAndrew | Promoted to active roster |   |   | Before |
| 8/2/1968 | SF | Brown,O | Promoted to active roster |   |   | Before |
| 8/2/1968 | Was | Cullen | Acquired via trade | ChA |   | Before |
| 8/2/1968 | Was | Hansen | Traded away | ChA |   | Before |
| 8/3/1968 | Bal | Adamson | Demoted to reserve roster |   |   | Before |
| 8/3/1968 | Hou | Watson | Placed on disabled list |   | 8/3/1968 | Before |
| 8/3/1968 | Was | Brinkman | Activated from restricted list |   |   | Before |
| 8/3/1968 | Was | Martin,G | Demoted to reserve roster |   |   | Before |
| 8/4/1968 | Cal | Clark,Ri | Placed on restricted list |   |   | Before |
| 8/4/1968 | Cle | Alvis | Activated from disabled list |   |   | Before |
| 8/4/1968 | Cle | Nelson,D | Placed on restricted list |   |   | Before |
| 8/5/1968 | Bal | O'Donoghue | Demoted to reserve roster |   |   | Before |
| 8/5/1968 | Bal | Richert | Activated from restricted list |   |   | Before |
| 8/5/1968 | Oak | Keough | Promoted to active roster |   |   | Before |
| 8/5/1968 | Oak | Sanders | Demoted to reserve roster |   |   | Before |
| 8/6/1968 | Cal | Cottier | Promoted to active roster |   |   | Before |
| 8/6/1968 | Cal | Rodriguez,A | Placed on disabled list |   | 8/6/1968 | Before |
| 8/6/1968 | ChA | Bradford | Demoted to reserve roster |   |   | Before |
| 8/6/1968 | ChA | Lazar | Promoted to active roster |   |   | Before |
| 8/7/1968 | Bos | Siebern | Released |   |   | Before |
| 8/7/1968 | Pit | Patek | Activated from disabled list |   |   | Before |
| 8/9/1968 | Cle | Klimchock | Demoted to reserve roster |   |   | Before |
| 8/9/1968 | Cle | Nelson,D | Activated from restricted list |   |   | Before |
| 8/9/1968 | Min | Hall,T | Promoted to active roster |   |   | Before |
| 8/9/1968 | Min | Keller | Placed on restricted list |   |   | Before |
| 8/9/1968 | Oak | Lewis | Promoted to active roster |   |   | Before |
| 8/9/1968 | Oak | Rudi | Placed on restricted list |   |   | Before |
| 8/10/1968 | NYA | Fernandez,F | Placed on restricted list |   |   | Before |
| 8/10/1968 | NYA | Rodriguez,E | Promoted to active roster |   |   | Before |
| 8/10/1968 | StL | Davis | Placed on restricted list |   |   | Before |
| 8/10/1968 | StL | Wicker | Promoted to active roster |   |   | Before |
| 8/11/1968 | Atl | Britton | Placed on restricted list |   |   | Before |
| 8/11/1968 | Atl | Kester | Promoted to active roster |   |   | Before |
| 8/11/1968 | Phi | Clemens | Promoted to active roster |   |   | Before |
| 8/11/1968 | Phi | Sullivan | Demoted to reserve roster |   |   | Before |
| 8/12/1968 | Atl | Boyer,C | Placed on disabled list |   | 8/12/1968 | Before |
| 8/12/1968 | Cal | Schaal | Placed on disabled list |   | 8/12/1968 | Before |
| 8/12/1968 | Cal | Wright | Activated from restricted list |   |   | Before |
| 8/12/1968 | ChN | Reynolds | Promoted to active roster |   |   | Before |
| 8/12/1968 | ChN | Ross | Demoted to reserve roster |   |   | Before |
| 8/12/1968 | Cle | Nelson,D | Placed on restricted list |   |   | Before |
| 8/12/1968 | Cle | Pina | Promoted to active roster |   |   | Before |
| 8/12/1968 | NYA | Downing | Promoted to active roster |   |   | Before |
| 8/12/1968 | NYA | Fernandez,F | Activated from restricted list |   |   | Before |
| 8/12/1968 | NYA | Rodriguez,E | Demoted to reserve roster |   |   | Before |
| 8/12/1968 | NYA | Tillotson | Demoted to reserve roster |   |   | Before |
| 8/12/1968 | StL | Davis | Activated from restricted list |   |   | Before |
| 8/12/1968 | StL | Wicker | Demoted to reserve roster |   |   | Before |
| 8/13/1968 | Cle | Kurtz | Demoted to reserve roster |   |   | Before |
| 8/13/1968 | Pit | Virdon | Released |   |   | Before |
| 8/14/1968 | Bal | Etchbarren | Placed on disabled list |   | 8/14/1968 | Before |
| 8/14/1968 | Bal | Nelson,R | Promoted to active roster |   |   | Before |
| 8/14/1968 | ChA | Bradford | Promoted to active roster |   |   | Before |
| 8/14/1968 | ChA | Hopkins | Demoted to reserve roster |   |   | Before |
| 8/14/1968 | ChN | Bobb | Promoted to active roster |   |   | Before |
| 8/14/1968 | ChN | Felske | Demoted to reserve roster |   |   | Before |
| 8/14/1968 | Det | Campbell | Demoted to reserve roster |   |   | Before |
| 8/14/1968 | Det | Matchick | Activated from restricted list |   |   | Before |
| 8/14/1968 | Pit | Cannizzaro | Promoted to active roster |   |   | Before |
| 8/15/1968 | Cal | Llenas | Promoted to active roster |   |   | Before |
| 8/15/1968 | Was | Baldwin | Promoted to active roster |   |   | Before |
| 8/15/1968 | Was | Howard,B | Placed on disabled list |   | 8/15/1968 | Before |
| 8/16/1968 | Cle | Nelson,D | Activated from restricted list |   |   | Before |
| 8/16/1968 | Hou | Herrera | Promoted to active roster |   |   | Before |
| 8/19/1968 | Cal | Clark,Ri | Activated from restricted list |   |   | Before |
| 8/19/1968 | Cal | Murphy | Demoted to reserve roster |   |   | Before |
| 8/19/1968 | Pit | Henry | Released |   |   | Before |
| 8/19/1968 | SF | Oliver | Activated from disabled list |   |   | Before |
| 8/20/1968 | NYN | Bosch | Demoted to reserve roster |   |   | Before |
| 8/20/1968 | NYN | Boswell,K | Activated from disabled list |   |   | Before |
| 8/23/1968 | Atl | Garrido | Promoted to active roster |   |   | Before |
| 8/23/1968 | Cal | Egan | Promoted to active roster |   |   | Before |
| 8/23/1968 | Cal | McFarlane | Placed on disabled list |   | 8/23/1968 | Before |
| 8/23/1968 | ChA | John | Placed on disabled list |   | 8/23/1968 | Before |
| 8/24/1968 | Bal | Motton | Placed on disabled list |   | 8/24/1968 | Before |
| 8/24/1968 | Bal | Rettenmund | Promoted to active roster |   |   | Before |
| 8/24/1968 | ChA | Nyman | Promoted to active roster |   |   | Before |
| 8/24/1968 | Oak | Sanders | Promoted to active roster |   |   | Before |
| 8/25/1968 | Atl | Britton | Activated from restricted list |   |   | Before |
| 8/25/1968 | Atl | Page | Demoted to reserve roster |   |   | Before |
| 8/25/1968 | ChA | Voss | Activated from disabled list |   |   | Before |
| 8/25/1968 | ChA | Voss | Demoted to reserve roster |   |   | Before |
| 8/26/1968 | ChN | Fast | Promoted to active roster |   |   | Before |
| 8/26/1968 | ChN | Holtzman | Placed on restricted list |   |   | Before |
| 8/27/1968 | Cal | Sherry | Promoted to active roster |   |   | Before |
| 8/28/1968 | Cle | Gardner | Promoted to active roster |   |   | Before |
| 8/28/1968 | Cle | Leon | Promoted to active roster |   |   | Before |
| 8/28/1968 | Oak | Lewis | Demoted to reserve roster |   |   | Before |
| 8/28/1968 | Oak | Rudi | Activated from restricted list |   |   | Before |
| 8/29/1968 | ChN | Fast | Demoted to reserve roster |   |   | Before |
| 8/29/1968 | Min | Keller | Activated from restricted list |   |   | Before |
| 8/30/1968 | ChA | Morales | Promoted to active roster |   |   | Before |
| 8/31/1968 | Cle | Hedlund | Promoted to active roster |   |   | Before |
| 8/31/1968 | Det | Face | Acquired via trade | Pit |   | Before |
| 8/31/1968 | Pit | Face | Traded away | Det |   | Before |
| 9/1/1968 | Atl | Baker | Promoted to active roster |   |   | Before |
| 9/1/1968 | Atl | Garr | Promoted to active roster |   |   | Before |
| 9/1/1968 | Atl | Jackson,S | Activated from disabled list |   |   | Before |
| 9/1/1968 | Atl | Santorini | Promoted to active roster |   |   | Before |
| 9/1/1968 | Bos | Alvarado | Promoted to active roster |   |   | Before |
| 9/1/1968 | Bos | Brandon | Promoted to active roster |   |   | Before |
| 9/1/1968 | Bos | Lahoud | Promoted to active roster |   |   | Before |
| 9/1/1968 | Bos | Moses | Promoted to active roster |   |   | Before |
| 9/1/1968 | Bos | Roggenburk | Promoted to active roster |   |   | Before |
| 9/1/1968 | Bos | Wenz | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cal | Johnstone | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cal | Kealey | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cal | Rodriguez,A | Activated from disabled list |   |   | Before |
| 9/1/1968 | Cal | Spencer | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cal | Tatum | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cal | Weaver | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChA | Hopkins | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChA | May,C | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChA | Melton | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChA | Rath | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChA | Voss | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChA | Wynne | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChN | Hartensten | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChN | Holtzman | Activated from restricted list |   |   | Before |
| 9/1/1968 | ChN | Jones,Cla | Promoted to active roster |   |   | Before |
| 9/1/1968 | ChN | Ross | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cle | Bailey,S | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cle | Fosse | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cle | Kurtz | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cle | Nagelson | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cle | Piniella | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cle | Scheinblum | Promoted to active roster |   |   | Before |
| 9/1/1968 | Cle | Vidal | Promoted to active roster |   |   | Before |
| 9/1/1968 | Det | Cain | Promoted to active roster |   |   | Before |
| 9/1/1968 | Det | Campbell | Promoted to active roster |   |   | Before |
| 9/1/1968 | Det | Christian | Promoted to active roster |   |   | Before |
| 9/1/1968 | Det | Mathews | Activated from disabled list |   |   | Before |
| 9/1/1968 | Det | Rooker | Promoted to active roster |   |   | Before |
| 9/1/1968 | LA | Moeller | Promoted to active roster |   |   | Before |
| 9/1/1968 | Min | Hernandez,J | Promoted to active roster |   |   | Before |
| 9/1/1968 | Min | Kelly | Promoted to active roster |   |   | Before |
| 9/1/1968 | Min | Killebrew | Activated from disabled list |   |   | Before |
| 9/1/1968 | Min | Mitterwald | Promoted to active roster |   |   | Before |
| 9/1/1968 | Min | Morris,D | Promoted to active roster |   |   | Before |
| 9/1/1968 | Min | Nettles | Promoted to active roster |   |   | Before |
| 9/1/1968 | Min | Stephen | Promoted to active roster |   |   | Before |
| 9/1/1968 | NYA | Cumberland | Promoted to active roster |   |   | Before |
| 9/1/1968 | NYA | Ferraro | Promoted to active roster |   |   | Before |
| 9/1/1968 | NYA | Rodriguez,E | Promoted to active roster |   |   | Before |
| 9/1/1968 | NYA | Whitaker | Promoted to active roster |   |   | Before |
| 9/1/1968 | NYN | Ryan | Activated from disabled list |   |   | Before |
| 9/1/1968 | NYN | Shaw | Promoted to active roster |   |   | Before |
| 9/1/1968 | Oak | Fingers | Promoted to active roster |   |   | Before |
| 9/1/1968 | Oak | Lauzerique | Promoted to active roster |   |   | Before |
| 9/1/1968 | Oak | Lewis | Promoted to active roster |   |   | Before |
| 9/1/1968 | Oak | Webster | Promoted to active roster |   |   | Before |
| 9/1/1968 | Phi | Colton | Promoted to active roster |   |   | Before |
| 9/1/1968 | Phi | Hisle | Promoted to active roster |   |   | Before |
| 9/1/1968 | Phi | Money | Promoted to active roster |   |   | Before |
| 9/1/1968 | Pit | DalCanton | Promoted to active roster |   |   | Before |
| 9/1/1968 | Pit | Hebner | Promoted to active roster |   |   | Before |
| 9/1/1968 | Pit | Hiller,C | Promoted to active roster |   |   | Before |
| 9/1/1968 | Pit | Oliver,A | Promoted to active roster |   |   | Before |
| 9/1/1968 | Pit | Wickersham | Promoted to active roster |   |   | Before |
| 9/1/1968 | SF | Henderson | Promoted to active roster |   |   | Before |
| 9/1/1968 | SF | Robertson | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Billings | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Bowens | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Coggins | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Cox,C | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Denehy | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Jones,S | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Martin,G | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Miles | Promoted to active roster |   |   | Before |
| 9/1/1968 | Was | Schoen | Promoted to active roster |   |   | Before |
| 9/2/1968 | Cin | Queen | Activated from disabled list |   |   | Before |
| 9/3/1968 | ChN | McMath | Promoted to active roster |   |   | Before |
| 9/3/1968 | Cin | Kelso | Promoted to active roster |   |   | Before |
| 9/3/1968 | Cin | McGinn | Promoted to active roster |   |   | Before |
| 9/3/1968 | Cin | McRae | Promoted to active roster |   |   | Before |
| 9/3/1968 | Cin | Schaffer | Promoted to active roster |   |   | Before |
| 9/3/1968 | Hou | Blasingame | Activated from disabled list |   |   | Before |
| 9/3/1968 | Hou | King | Promoted to active roster |   |   | Before |
| 9/3/1968 | LA | Alcaraz | Promoted to active roster |   |   | Before |
| 9/3/1968 | LA | Campanis | Promoted to active roster |   |   | Before |
| 9/3/1968 | LA | Ferrara | Activated from disabled list |   |   | Before |
| 9/3/1968 | LA | Foster | Promoted to active roster |   |   | Before |
| 9/3/1968 | LA | James,C | Promoted to active roster |   |   | Before |
| 9/3/1968 | LA | Sudakis | Promoted to active roster |   |   | Before |
| 9/3/1968 | NYN | Bosch | Promoted to active roster |   |   | Before |
| 9/3/1968 | NYN | Frisella | Promoted to active roster |   |   | Before |
| 9/3/1968 | NYN | Heise | Promoted to active roster |   |   | Before |
| 9/3/1968 | NYN | Jorgensen | Promoted to active roster |   |   | Before |
| 9/3/1968 | NYN | Rohr,L | Promoted to active roster |   |   | Before |
| 9/3/1968 | SF | Mason | Promoted to active roster |   |   | Before |
| 9/4/1968 | StL | Hague | Promoted to active roster |   |   | Before |
| 9/4/1968 | StL | Torrez | Promoted to active roster |   |   | Before |
| 9/4/1968 | StL | Wicker | Promoted to active roster |   |   | Before |
| 9/5/1968 | Atl | Guinn | Promoted to active roster |   |   | Before |
| 9/5/1968 | Atl | Page | Promoted to active roster |   |   | Before |
| 9/5/1968 | Atl | Valdespino | Promoted to active roster |   |   | Before |
| 9/5/1968 | Oak | Lachemann | Promoted to active roster |   |   | Before |
| 9/5/1968 | Oak | Pierce | Promoted to active roster |   |   | Before |
| 9/5/1968 | StL | Simmons | Promoted to active roster |   |   | Before |
| 9/6/1968 | Atl | Boyer,C | Activated from disabled list |   |   | Before |
| 9/6/1968 | Atl | Hriniak | Promoted to active roster |   |   | Before |
| 9/6/1968 | Hou | McFadden | Promoted to active roster |   |   | Before |
| 9/6/1968 | Was | Howard,B | Activated from disabled list |   |   | Before |
| 9/7/1968 | ChN | Brown,J | Promoted to active roster |   |   | Before |
| 9/7/1968 | ChN | LaRose | Promoted to active roster |   |   | Before |
| 9/8/1968 | Cle | Vidal | Released |   |   | Before |
| 9/9/1968 | Bos | Thomas.G | Promoted to active roster |   |   | Before |
| 9/9/1968 | ChN | Tiefenauer | Promoted to active roster |   |   | Before |
| 9/9/1968 | Hou | Colbert | Promoted to active roster |   |   | Before |
| 9/9/1968 | Hou | Gilson | Promoted to active roster |   |   | Before |
| 9/9/1968 | Hou | Mayberry | Promoted to active roster |   |   | Before |
| 9/9/1968 | Hou | Murrell | Promoted to active roster |   |   | Before |
| 9/9/1968 | Hou | Walton | Promoted to active roster |   |   | Before |
| 9/9/1968 | NYA | Solaita | Promoted to active roster |   |   | Before |
| 9/12/1968 | Bal | O'Donoghue | Promoted to active roster |   |   | Before |
| 9/14/1968 | Bal | Adamson | Promoted to active roster |   |   | Before |
| 9/14/1968 | Bal | Fiore | Promoted to active roster |   |   | Before |
| 9/14/1968 | Bal | Motton | Activated from disabled list |   |   | Before |
| 9/14/1968 | Hou | Morgan | Activated from disabled list |   |   | Before |
| 9/16/1968 | Bal | Beene | Promoted to active roster |   |   | Before |
| 9/16/1968 | Bal | Floyd | Promoted to active roster |   |   | Before |
| 9/19/1968 | Bal | Etchbarren | Activated from disabled list |   |   | Before |
| 9/19/1968 | NYN | Dyer | Promoted to active roster |   |   | Before |
| 9/20/1968 | Atl | Page | Demoted to reserve roster |   |   | Before |
| 9/20/1968 | Atl | Valdespino | Demoted to reserve roster |   |   | Before |
| 9/23/1968 | Cal | Rojas | Activated from disabled list |   |   | Before |
| 9/23/1968 | ChN | Oliver,G | Activated from disabled list |   |   | Before |
| 9/27/1968 | Bos | Santiago | Activated from disabled list |   |   | Before |
| 9/28/1968 | Hou | Thomas,L | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | Det | Cain | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | Det | Campbell | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | Det | Christian | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | Det | Face | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | Det | Rooker | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | Det | Warden | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | Det | Wyatt | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | Det | Wyatt | Promoted to active roster |   |   | Before |
| 9/29/1968 | StL | Hague | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | StL | Simmons | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | StL | Torrez | Demoted to reserve roster |   |   | Before |
| 9/29/1968 | StL | Wicker | Demoted to reserve roster |   |   | Before |
| 9/30/1968 | Det | Christian | Traded away | ChA |   | Before |
| 9/30/1968 | Det | Rooker | Traded away | NYA |   | Before |