| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 3/29/1974 | EB | Blass | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Brown,G | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Clyde | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Coggins | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Cox | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Crawford | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Crowley | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Dilone | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Gomez | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Herndon | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Howard | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Johnson | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Locklear | Demoted to reserve roster |   |   | Before |
| 3/29/1974 | EB | Niekro,J | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | BB | Torres | Signed |   |   | Before |
| 3/31/1974 | BB | Torres | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | EB | Beckert | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | EB | Brown,G | Promoted to active roster |   |   | Before |
| 3/31/1974 | EB | Clyde | Promoted to active roster |   |   | Before |
| 3/31/1974 | EB | Coggins | Promoted to active roster |   |   | Before |
| 3/31/1974 | EB | Gomez | Promoted to active roster |   |   | Before |
| 3/31/1974 | EB | Hardy | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | EB | Hilton | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | EB | Johnson | Promoted to active roster |   |   | Before |
| 3/31/1974 | EB | Lane | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | EB | May | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | EB | Niekro,J | Promoted to active roster |   |   | Before |
| 3/31/1974 | EB | Odom | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | JKC | Hosley | Signed |   |   | Before |
| 3/31/1974 | JKC | Hosley | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | LM | Gaston | Signed |   |   | Before |
| 3/31/1974 | LM | Gaston | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | Mac | Brohamer | Placed on disabled list |   | 3/27/1974 | Before |
| 3/31/1974 | Mac | Hansen | Signed |   |   | Before |
| 3/31/1974 | Mac | Hansen | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | Mac | Helms | Promoted to active roster |   |   | Before |
| 3/31/1974 | MI | Moose | Signed |   |   | Before |
| 3/31/1974 | MI | Moose | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | WCF | McMahon | Signed |   |   | Before |
| 3/31/1974 | WCF | McMahon | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | WL | Harris | Signed |   |   | Before |
| 3/31/1974 | WL | Harris | Demoted to reserve roster |   |   | Before |
| 3/31/1974 | WL | Michael | Promoted to active roster |   |   | Before |
| 3/31/1974 | WL | Sutherland | Placed on disabled list |   | 3/27/1974 | Before |
| 4/2/1974 | EB | Concepcion | Acquired via trade | Mac |   | After |
| 4/2/1974 | EB | Hernandez | Traded away | Mac |   | After |
| 4/2/1974 | Mac | Concepcion | Traded away | EB |   | After |
| 4/2/1974 | Mac | Hernandez | Acquired via trade | EB |   | After |
| 4/3/1974 | JW | Pole | Signed |   |   | Before |
| 4/3/1974 | JW | Pole | Demoted to reserve roster |   |   | Before |
| 4/3/1974 | JW | Stelmaszek | Signed |   |   | Before |
| 4/3/1974 | JW | Stelmaszek | Demoted to reserve roster |   |   | Before |
| 4/3/1974 | MI | Miller | Signed |   |   | Before |
| 4/3/1974 | MI | Miller | Demoted to reserve roster |   |   | Before |
| 4/5/1974 | SA | Mota | Signed |   |   | Before |
| 4/5/1974 | SA | Mota | Demoted to reserve roster |   |   | Before |
| 4/7/1974 | MI | Kranepool | Placed on disabled list |   | 4/4/1974 | Before |
| 4/7/1974 | MI | Miller | Promoted to active roster |   |   | Before |
| 4/7/1974 | SA | Carty | Promoted to active roster |   |   | Before |
| 4/7/1974 | SA | Hargrove | Placed on disabled list |   | 4/4/1974 | Before |
| 4/7/1974 | SA | Lis | Signed |   |   | Before |
| 4/7/1974 | SA | Lis | Demoted to reserve roster |   |   | Before |
| 4/7/1974 | WL | Jefferson | Signed |   |   | Before |
| 4/10/1974 | KW | Martinez | Promoted to active roster |   |   | Before |
| 4/10/1974 | KW | Mitterwald | Placed on disabled list |   | 4/3/1974 | Before |
| 4/10/1974 | LM | Knox | Signed |   |   | Before |
| 4/10/1974 | LM | Knox | Demoted to reserve roster |   |   | Before |
| 4/10/1974 | SA | Gogolewski | Signed |   |   | Before |
| 4/10/1974 | SA | Gogolewski | Demoted to reserve roster |   |   | Before |
| 4/15/1974 | WL | Jefferson | Demoted to reserve roster |   |   | Before |
| 4/15/1974 | WL | McAnally | Demoted to reserve roster |   |   | Before |
| 4/15/1974 | WL | McAnally | Promoted to active roster |   |   | Before |
| 4/15/1974 | WL | Michael | Demoted to reserve roster |   |   | Before |
| 4/15/1974 | WL | Richard | Demoted to reserve roster |   |   | Before |
| 4/15/1974 | WL | Richard | Promoted to active roster |   |   | Before |
| 4/15/1974 | WL | Ruhle | Promoted to active roster |   |   | Before |
| 4/15/1974 | WL | Schueler | Placed on disabled list |   | 4/12/1974 | Before |
| 4/15/1974 | WL | Sutherland | Activated from disabled list |   |   | Before |
| 4/18/1974 | Mac | Brohamer | Activated from disabled list |   |   | Before |
| 4/18/1974 | Mac | Helms | Demoted to reserve roster |   |   | Before |
| 4/24/1974 | EB | Baker | Acquired via trade | Mac |   | After |
| 4/24/1974 | EB | Coluccio | Traded away | Mac |   | After |
| 4/24/1974 | EB | Gullett | Acquired via trade | Mac |   | After |
| 4/24/1974 | EB | May | Traded away | Mac |   | After |
| 4/24/1974 | EB | Norman | Traded away | Mac |   | After |
| 4/24/1974 | Mac | Baker | Traded away | EB |   | After |
| 4/24/1974 | Mac | Coluccio | Acquired via trade | EB |   | After |
| 4/24/1974 | Mac | Gullett | Traded away | EB |   | After |
| 4/24/1974 | Mac | May | Acquired via trade | EB |   | After |
| 4/24/1974 | Mac | Norman | Acquired via trade | EB |   | After |
| 4/25/1974 | KW | Martinez | Demoted to reserve roster |   |   | Before |
| 4/25/1974 | KW | Mitterwald | Activated from disabled list |   |   | Before |
| 4/25/1974 | LM | Johnson | Placed on disabled list |   | 4/25/1974 | Before |
| 4/25/1974 | LM | Oglivie | Promoted to active roster |   |   | Before |
| 4/25/1974 | Mac | Coluccio | Demoted to reserve roster |   |   | Before |
| 4/25/1974 | Mac | Hahn | Promoted to active roster |   |   | Before |
| 4/25/1974 | MI | Kranepool | Activated from disabled list |   |   | Before |
| 4/25/1974 | MI | Thompson | Demoted to reserve roster |   |   | Before |
| 4/25/1974 | WL | Richard | Promoted to active roster |   |   | Before |
| 4/25/1974 | WL | Ruhle | Demoted to reserve roster |   |   | Before |
| 4/28/1974 | MI | Perry,J | Acquired via trade | SA |   | After |
| 4/28/1974 | SA | Perry,J | Traded away | MI |   | After |
| 4/29/1974 | MI | Miller | Demoted to reserve roster |   |   | Before |
| 4/29/1974 | SA | Bryant | Signed |   |   | Before |
| 4/29/1974 | SA | Carty | Demoted to reserve roster |   |   | Before |
| 4/29/1974 | SA | Hargrove | Activated from disabled list |   |   | Before |
| 4/29/1974 | SA | Kobel | Placed on disabled list |   | 4/19/1974 | Before |
| 4/29/1974 | WL | LaGrow | Placed on disabled list |   | 4/25/1974 | Before |
| 4/29/1974 | WL | Spillner | Promoted to active roster |   |   | Before |
| 5/2/1974 | LM | Oglivie | Demoted to reserve roster |   |   | Before |
| 5/2/1974 | LM | Rau | Promoted to active roster |   |   | Before |
| 5/2/1974 | WCF | Stone | Signed |   |   | Before |
| 5/2/1974 | WCF | Stone | Demoted to reserve roster |   |   | Before |
| 5/2/1974 | WL | Mason | Demoted to reserve roster |   |   | Before |
| 5/2/1974 | WL | Michael | Promoted to active roster |   |   | Before |
| 5/9/1974 | WCF | Foster | Demoted to reserve roster |   |   | Before |
| 5/9/1974 | WCF | Hermoso | Signed |   |   | Before |
| 5/9/1974 | WCF | Hermoso | Demoted to reserve roster |   |   | Before |
| 5/9/1974 | WCF | Palmer | Signed |   |   | Before |
| 5/9/1974 | WCF | Palmer | Demoted to reserve roster |   |   | Before |
| 5/9/1974 | WCF | Stone | Promoted to active roster |   |   | Before |
| 5/13/1974 | LM | Johnson | Activated from disabled list |   |   | Before |
| 5/13/1974 | LM | Rau | Demoted to reserve roster |   |   | Before |
| 5/13/1974 | SA | Kobel | Activated from disabled list |   |   | Before |
| 5/13/1974 | WL | LaGrow | Activated from disabled list |   |   | Before |
| 5/13/1974 | WL | Oliver | Placed on disabled list |   | 5/12/1974 | Before |
| 5/13/1974 | WL | Richard | Demoted to reserve roster |   |   | Before |
| 5/13/1974 | WL | Schueler | Activated from disabled list |   |   | Before |
| 5/13/1974 | WL | Spillner | Demoted to reserve roster |   |   | Before |
| 5/13/1974 | WL | Tolan | Promoted to active roster |   |   | Before |
| 5/15/1974 | BB | Guerrero | Acquired via trade | KW |   | After |
| 5/15/1974 | BB | Hutton | Acquired via trade | KW |   | After |
| 5/15/1974 | BB | May,M | Traded away | KW |   | After |
| 5/15/1974 | KW | Guerrero | Traded away | BB |   | After |
| 5/15/1974 | KW | Hutton | Traded away | BB |   | After |
| 5/15/1974 | KW | May,M | Acquired via trade | BB |   | After |
| 5/16/1974 | BB | Correll | Promoted to active roster |   |   | Before |
| 5/16/1974 | DB | Gamble | Placed on disabled list |   | 5/13/1974 | Before |
| 5/16/1974 | DB | Mitchell | Promoted to active roster |   |   | Before |
| 5/16/1974 | KW | Chalk | Promoted to active roster |   |   | Before |
| 5/16/1974 | KW | Cubbage | Demoted to reserve roster |   |   | Before |
| 5/16/1974 | KW | Cubbage | Promoted to active roster |   |   | Before |
| 5/16/1974 | KW | Mitterwald | Demoted to reserve roster |   |   | Before |
| 5/16/1974 | WL | Coleman | Demoted to reserve roster |   |   | Before |
| 5/16/1974 | WL | Lowenstein | Demoted to reserve roster |   |   | Before |
| 5/16/1974 | WL | McAnally | Demoted to reserve roster |   |   | Before |
| 5/16/1974 | WL | Osteen | Promoted to active roster |   |   | Before |
| 5/16/1974 | WL | Sharp | Promoted to active roster |   |   | Before |
| 5/16/1974 | WL | Spillner | Promoted to active roster |   |   | Before |
| 5/20/1974 | JKC | Downing | Promoted to active roster |   |   | Before |
| 5/20/1974 | JKC | Lynn | Demoted to reserve roster |   |   | Before |
| 5/20/1974 | JKC | Siebert | Demoted to reserve roster |   |   | Before |
| 5/20/1974 | JKC | Staub | Promoted to active roster |   |   | Before |
| 5/22/1974 | EB | Hamilton | Acquired via trade | WCF |   | After |
| 5/22/1974 | EB | Hardy | Traded away | WCF |   | After |
| 5/22/1974 | LM | Cram | Acquired via trade | Mac |   | After |
| 5/22/1974 | LM | Jorgensen | Acquired via trade | Mac |   | After |
| 5/22/1974 | LM | Knox | Traded away | Mac |   | After |
| 5/22/1974 | LM | Todd | Traded away | Mac |   | After |
| 5/22/1974 | Mac | Cram | Traded away | LM |   | After |
| 5/22/1974 | Mac | Jorgensen | Traded away | LM |   | After |
| 5/22/1974 | Mac | Knox | Acquired via trade | LM |   | After |
| 5/22/1974 | Mac | Todd | Acquired via trade | LM |   | After |
| 5/22/1974 | WCF | Hamilton | Traded away | EB |   | After |
| 5/22/1974 | WCF | Hardy | Acquired via trade | EB |   | After |
| 5/23/1974 | EB | Hamilton | Demoted to reserve roster |   |   | Before |
| 5/23/1974 | EB | Hamilton | Promoted to active roster |   |   | Before |
| 5/23/1974 | EB | Krausse | Demoted to reserve roster |   |   | Before |
| 5/23/1974 | KW | Linzy | Promoted to active roster |   |   | Before |
| 5/23/1974 | KW | Richert | Demoted to reserve roster |   |   | Before |
| 5/23/1974 | LM | Carbo | Demoted to reserve roster |   |   | Before |
| 5/23/1974 | LM | Gossage | Promoted to active roster |   |   | Before |
| 5/23/1974 | Mac | McCraw | Promoted to active roster |   |   | Before |
| 5/23/1974 | Mac | Todd | Demoted to reserve roster |   |   | Before |
| 5/23/1974 | WCF | Butler | Promoted to active roster |   |   | Before |
| 5/23/1974 | WL | Foote | Placed on disabled list |   | 5/21/1974 | Before |
| 5/23/1974 | WL | Sims | Signed |   |   | Before |
| 5/27/1974 | LM | Carbo | Promoted to active roster |   |   | Before |
| 5/27/1974 | LM | Tyson | Demoted to reserve roster |   |   | Before |
| 5/27/1974 | WL | Richard | Promoted to active roster |   |   | Before |
| 5/27/1974 | WL | Torrez | Placed on disabled list |   | 5/26/1974 | Before |
| 5/30/1974 | BB | Grubb | Demoted to reserve roster |   |   | Before |
| 5/30/1974 | BB | Miller | Promoted to active roster |   |   | Before |
| 5/30/1974 | EB | Cox | Promoted to active roster |   |   | Before |
| 5/30/1974 | EB | Millan | Placed on disabled list |   | 5/29/1974 | Before |
| 5/30/1974 | Mac | Albury | Demoted to reserve roster |   |   | Before |
| 5/30/1974 | Mac | Todd | Promoted to active roster |   |   | Before |
| 5/30/1974 | MI | Miller | Promoted to active roster |   |   | Before |
| 5/30/1974 | MI | Walker | Demoted to reserve roster |   |   | Before |
| 5/30/1974 | WL | Hundley | Signed |   |   | Before |
| 5/30/1974 | WL | LaGrow | Demoted to reserve roster |   |   | Before |
| 5/30/1974 | WL | Oliver | Activated from disabled list |   |   | Before |
| 5/30/1974 | WL | Sharp | Demoted to reserve roster |   |   | Before |
| 5/30/1974 | WL | Sims | Placed on disabled list |   | 5/27/1974 | Before |
| 5/30/1974 | WL | Wilcox | Promoted to active roster |   |   | Before |
| 6/3/1974 | LM | McGlothen | Placed on disabled list |   | 6/3/1974 | Before |
| 6/3/1974 | LM | Rau | Promoted to active roster |   |   | Before |
| 6/6/1974 | CC | Martinez | Demoted to reserve roster |   |   | Before |
| 6/6/1974 | CC | Splittorff | Promoted to active roster |   |   | Before |
| 6/6/1974 | DB | Gamble | Activated from disabled list |   |   | Before |
| 6/6/1974 | DB | Mitchell | Demoted to reserve roster |   |   | Before |
| 6/6/1974 | KW | Cuellar | Demoted to reserve roster |   |   | Before |
| 6/6/1974 | KW | Cuellar | Promoted to active roster |   |   | Before |
| 6/6/1974 | KW | Lockwood | Demoted to reserve roster |   |   | Before |
| 6/6/1974 | KW | Lockwood | Promoted to active roster |   |   | Before |
| 6/6/1974 | MI | Ellingsen | Demoted to reserve roster |   |   | Before |
| 6/6/1974 | MI | Walker | Promoted to active roster |   |   | Before |
| 6/6/1974 | SS | Plummer | Promoted to active roster |   |   | Before |
| 6/6/1974 | WL | Foote | Activated from disabled list |   |   | Before |
| 6/6/1974 | WL | Hundley | Demoted to reserve roster |   |   | Before |
| 6/10/1974 | MI | Ferguson | Placed on disabled list |   | 6/6/1974 | Before |
| 6/10/1974 | MI | Moses | Promoted to active roster |   |   | Before |
| 6/12/1974 | SS | Dempsey | Placed on disabled list |   | 6/7/1974 | Before |
| 6/13/1974 | DD | Chambliss | Promoted to active roster |   |   | Before |
| 6/13/1974 | Mac | Aaron | Placed on disabled list |   | 6/12/1974 | Before |
| 6/13/1974 | Mac | Dunn | Promoted to active roster |   |   | Before |
| 6/13/1974 | Mac | Grieve | Promoted to active roster |   |   | Before |
| 6/13/1974 | Mac | Kaline | Demoted to reserve roster |   |   | Before |
| 6/17/1974 | DD | Yastrzemski | Placed on disabled list |   | 6/16/1974 | Before |
| 6/17/1974 | EB | Cox | Demoted to reserve roster |   |   | Before |
| 6/17/1974 | EB | Millan | Activated from disabled list |   |   | Before |
| 6/17/1974 | MI | Fosse | Promoted to active roster |   |   | Before |
| 6/17/1974 | MI | Grote | Placed on disabled list |   | 6/14/1974 | Before |
| 6/18/1974 | LM | McGlothen | Activated from disabled list |   |   | Before |
| 6/18/1974 | LM | Rau | Demoted to reserve roster |   |   | Before |
| 6/20/1974 | CC | Bibby | Promoted to active roster |   |   | Before |
| 6/20/1974 | CC | D'Acquisto | Promoted to active roster |   |   | Before |
| 6/20/1974 | CC | Nettles | Demoted to reserve roster |   |   | Before |
| 6/20/1974 | CC | Palmer | Placed on disabled list |   | 6/18/1974 | Before |
| 6/20/1974 | LM | McBride | Placed on disabled list |   | 6/20/1974 | Before |
| 6/20/1974 | LM | Oglivie | Promoted to active roster |   |   | Before |
| 6/25/1974 | LM | McGlothen | Placed on disabled list |   | 6/24/1974 | Before |
| 6/25/1974 | LM | Rau | Promoted to active roster |   |   | Before |
| 6/25/1974 | Mac | Coluccio | Promoted to active roster |   |   | Before |
| 6/25/1974 | Mac | Hahn | Placed on disabled list |   | 6/21/1974 | Before |
| 6/25/1974 | MI | Ferguson | Activated from disabled list |   |   | Before |
| 6/25/1974 | MI | Fosse | Demoted to reserve roster |   |   | Before |
| 7/1/1974 | DD | Chambliss | Demoted to reserve roster |   |   | Before |
| 7/1/1974 | DD | Yastrzemski | Activated from disabled list |   |   | Before |
| 7/1/1974 | WCF | Foster | Promoted to active roster |   |   | Before |
| 7/1/1974 | WCF | Stone | Demoted to reserve roster |   |   | Before |
| 7/1/1974 | WL | Schueler | Demoted to reserve roster |   |   | Before |
| 7/1/1974 | WL | Torrez | Activated from disabled list |   |   | Before |
| 7/2/1974 | Mac | Aaron | Activated from disabled list |   |   | Before |
| 7/2/1974 | Mac | Dunn | Demoted to reserve roster |   |   | Before |
| 7/2/1974 | WL | LaGrow | Promoted to active roster |   |   | Before |
| 7/2/1974 | WL | Richard | Placed on disabled list |   | 7/1/1974 | Before |
| 7/5/1974 | Lew | Gura | Demoted to reserve roster |   |   | Before |
| 7/5/1974 | Lew | Gura | Promoted to active roster |   |   | Before |
| 7/5/1974 | WL | Lowenstein | Promoted to active roster |   |   | Before |
| 7/5/1974 | WL | Sharp | Promoted to active roster |   |   | Before |
| 7/5/1974 | WL | Thornton | Demoted to reserve roster |   |   | Before |
| 7/5/1974 | WL | Wohlford | Demoted to reserve roster |   |   | Before |
| 7/7/1974 | LM | McBride | Activated from disabled list |   |   | Before |
| 7/7/1974 | LM | Oglivie | Demoted to reserve roster |   |   | Before |
| 7/9/1974 | MI | Grote | Activated from disabled list |   |   | Before |
| 7/9/1974 | MI | Kranepool | Demoted to reserve roster |   |   | Before |
| 7/10/1974 | LM | McGlothen | Activated from disabled list |   |   | Before |
| 7/10/1974 | LM | Rau | Demoted to reserve roster |   |   | Before |
| 7/12/1974 | KW | Fisk | Demoted to reserve roster |   |   | Before |
| 7/12/1974 | KW | Mitterwald | Promoted to active roster |   |   | Before |
| 7/12/1974 | MI | Kranepool | Promoted to active roster |   |   | Before |
| 7/12/1974 | MI | Moses | Demoted to reserve roster |   |   | Before |
| 7/12/1974 | SA | Bevacqua | Signed |   |   | Before |
| 7/12/1974 | SA | Bradford | Placed on disabled list |   | 7/3/1974 | Before |
| 7/12/1974 | SS | Dempsey | Activated from disabled list |   |   | Before |
| 7/12/1974 | WCF | Foster | Placed on disabled list |   | 7/9/1974 | Before |
| 7/12/1974 | WCF | Palmer | Promoted to active roster |   |   | Before |
| 7/12/1974 | WL | LaGrow | Demoted to reserve roster |   |   | Before |
| 7/12/1974 | WL | May,L | Demoted to reserve roster |   |   | Before |
| 7/12/1974 | WL | Schueler | Promoted to active roster |   |   | Before |
| 7/12/1974 | WL | Sharp | Demoted to reserve roster |   |   | Before |
| 7/12/1974 | WL | Thornton | Promoted to active roster |   |   | Before |
| 7/12/1974 | WL | Wohlford | Promoted to active roster |   |   | Before |
| 7/19/1974 | JKC | Brewer | Demoted to reserve roster |   |   | Before |
| 7/19/1974 | JKC | Cruz | Demoted to reserve roster |   |   | Before |
| 7/19/1974 | JKC | Singer | Demoted to reserve roster |   |   | Before |
| 7/19/1974 | SS | Plummer | Placed on disabled list |   | 7/14/1974 | Before |
| 7/19/1974 | WL | McAnally | Promoted to active roster |   |   | Before |
| 7/19/1974 | WL | Peterson | Promoted to active roster |   |   | Before |
| 7/19/1974 | WL | Spillner | Placed on disabled list |   | 7/14/1974 | Before |
| 7/19/1974 | WL | Sprague | Placed on disabled list |   | 7/14/1974 | Before |
| 7/22/1974 | DB | Breeden | Traded away | Lew |   | After |
| 7/22/1974 | DB | Gibson | Acquired via trade | Lew |   | After |
| 7/22/1974 | DB | Milner | Acquired via trade | Lew |   | After |
| 7/22/1974 | DB | Terpko | Traded away | Lew |   | After |
| 7/22/1974 | Lew | Breeden | Acquired via trade | DB |   | After |
| 7/22/1974 | Lew | Gibson | Traded away | DB |   | After |
| 7/22/1974 | Lew | Milner | Traded away | DB |   | After |
| 7/22/1974 | Lew | Terpko | Acquired via trade | DB |   | After |
| 7/23/1974 | JKC | Briles | Demoted to reserve roster |   |   | Before |
| 7/23/1974 | JKC | Greif | Promoted to active roster |   |   | Before |
| 7/23/1974 | JKC | Reuschel | Promoted to active roster |   |   | Before |
| 7/23/1974 | Lew | Breeden | Promoted to active roster |   |   | Before |
| 7/23/1974 | Lew | Hooton | Demoted to reserve roster |   |   | Before |
| 7/23/1974 | Lew | Hooton | Promoted to active roster |   |   | Before |
| 7/23/1974 | Lew | Kucek | Demoted to reserve roster |   |   | Before |
| 7/23/1974 | Lew | Kucek | Promoted to active roster |   |   | Before |
| 7/23/1974 | LM | Cram | Promoted to active roster |   |   | Before |
| 7/23/1974 | LM | Gossage | Placed on disabled list |   | 7/23/1974 | Before |
| 7/23/1974 | MI | Ellingsen | Promoted to active roster |   |   | Before |
| 7/23/1974 | MI | Kranepool | Demoted to reserve roster |   |   | Before |
| 7/25/1974 | DB | Campbell | Demoted to reserve roster |   |   | Before |
| 7/25/1974 | DB | Milner | Demoted to reserve roster |   |   | Before |
| 7/25/1974 | DB | Breeden | Traded away | Lew |   | After |
| 7/25/1974 | DB | Gibson | Acquired via trade | Lew |   | After |
| 7/25/1974 | DB | Milner | Acquired via trade | Lew |   | After |
| 7/25/1974 | DB | Terpko | Traded away | Lew |   | After |
| 7/25/1974 | Lew | Breeden | Acquired via trade | DB |   | After |
| 7/25/1974 | Lew | Gibson | Traded away | DB |   | After |
| 7/25/1974 | Lew | Milner | Traded away | DB |   | After |
| 7/25/1974 | Lew | Terpko | Acquired via trade | DB |   | After |
| 7/26/1974 | DB | Kingman | Demoted to reserve roster |   |   | Before |
| 7/26/1974 | DB | Milner | Promoted to active roster |   |   | Before |
| 7/29/1974 | EB | Colborn | Acquired via trade | WCF |   | After |
| 7/29/1974 | EB | Odom | Traded away | WCF |   | After |
| 7/29/1974 | WCF | Colborn | Traded away | EB |   | After |
| 7/29/1974 | WCF | Odom | Acquired via trade | EB |   | After |
| 7/30/1974 | CC | D'Acquisto | Promoted to active roster |   |   | Before |
| 7/30/1974 | CC | John | Placed on disabled list |   | 7/29/1974 | Before |
| 7/30/1974 | EB | Freisleben | Demoted to reserve roster |   |   | Before |
| 7/30/1974 | WCF | Foster | Activated from disabled list |   |   | Before |
| 7/30/1974 | WCF | Odom | Promoted to active roster |   |   | Before |
| 7/30/1974 | WCF | Tidrow | Placed on disabled list |   | 7/25/1974 | Before |
| 8/1/1974 | DB | Borbon | Traded away | WCF |   | After |
| 8/1/1974 | DB | Butler | Acquired via trade | WCF |   | After |
| 8/1/1974 | DB | Campbell | Traded away | WCF |   | After |
| 8/1/1974 | DB | Segui | Acquired via trade | WCF |   | After |
| 8/1/1974 | WCF | Borbon | Acquired via trade | DB |   | After |
| 8/1/1974 | WCF | Butler | Traded away | DB |   | After |
| 8/1/1974 | WCF | Campbell | Acquired via trade | DB |   | After |
| 8/1/1974 | WCF | Segui | Traded away | DB |   | After |
| 8/2/1974 | DB | Butler | Demoted to reserve roster |   |   | Before |
| 8/2/1974 | WCF | Campbell | Promoted to active roster |   |   | Before |
| 8/6/1974 | KW | Hoerner | Demoted to reserve roster |   |   | Before |
| 8/6/1974 | KW | Hutson | Promoted to active roster |   |   | Before |
| 8/9/1974 | Mac | Coluccio | Demoted to reserve roster |   |   | Before |
| 8/9/1974 | Mac | Hahn | Activated from disabled list |   |   | Before |
| 8/9/1974 | WL | Coleman | Promoted to active roster |   |   | Before |
| 8/9/1974 | WL | McAnally | Demoted to reserve roster |   |   | Before |
| 8/9/1974 | WL | Peterson | Demoted to reserve roster |   |   | Before |
| 8/9/1974 | WL | Spillner | Activated from disabled list |   |   | Before |
| 8/13/1974 | BB | Correll | Demoted to reserve roster |   |   | Before |
| 8/13/1974 | BB | Stanley | Promoted to active roster |   |   | Before |
| 8/13/1974 | BB | Swisher | Promoted to active roster |   |   | Before |
| 8/13/1974 | BB | Washington,C | Demoted to reserve roster |   |   | Before |
| 8/13/1974 | DB | Boswell | Promoted to active roster |   |   | Before |
| 8/13/1974 | DB | Kingman | Promoted to active roster |   |   | Before |
| 8/13/1974 | DB | Smith | Placed on disabled list |   | 8/11/1974 | Before |
| 8/13/1974 | DB | Speier | Demoted to reserve roster |   |   | Before |
| 8/16/1974 | WCF | Palmer | Demoted to reserve roster |   |   | Before |
| 8/16/1974 | WCF | Tidrow | Activated from disabled list |   |   | Before |
| 8/20/1974 | LM | Carbo | Demoted to reserve roster |   |   | Before |
| 8/20/1974 | LM | Etchebarren | Promoted to active roster |   |   | Before |
| 8/20/1974 | LM | Gossage | Activated from disabled list |   |   | Before |
| 8/20/1974 | LM | McGlothen | Demoted to reserve roster |   |   | Before |
| 8/23/1974 | EB | Beckert | Promoted to active roster |   |   | Before |
| 8/23/1974 | EB | Blair | Demoted to reserve roster |   |   | Before |
| 8/27/1974 | Mac | Blomberg | Demoted to reserve roster |   |   | Before |
| 8/27/1974 | Mac | Brohamer | Demoted to reserve roster |   |   | Before |
| 8/27/1974 | Mac | Coluccio | Promoted to active roster |   |   | Before |
| 8/27/1974 | Mac | Helms | Promoted to active roster |   |   | Before |
| 8/28/1974 | KW | Fisk | Promoted to active roster |   |   | Before |
| 8/28/1974 | KW | Hutson | Demoted to reserve roster |   |   | Before |
| 8/28/1974 | KW | Mitterwald | Demoted to reserve roster |   |   | Before |
| 8/28/1974 | KW | Richert | Promoted to active roster |   |   | Before |
| 8/28/1974 | LM | Carbo | Promoted to active roster |   |   | Before |
| 8/28/1974 | LM | Etchebarren | Demoted to reserve roster |   |   | Before |
| 8/28/1974 | MI | Kranepool | Promoted to active roster |   |   | Before |
| 8/28/1974 | MI | Walker | Demoted to reserve roster |   |   | Before |
| 8/28/1974 | SA | Doherty | Signed |   |   | Before |
| 8/28/1974 | SA | Ontiveros | Demoted to reserve roster |   |   | Before |
| 9/1/1974 | EB | Beckert | Demoted to reserve roster |   |   | Before |
| 9/1/1974 | EB | Blair | Promoted to active roster |   |   | Before |
| 9/3/1974 | DB | Kingman | Demoted to reserve roster |   |   | Before |
| 9/3/1974 | DB | Smith | Activated from disabled list |   |   | Before |
| 9/3/1974 | DB | Speier | Promoted to active roster |   |   | Before |
| 9/3/1974 | SA | Kobel | Demoted to reserve roster |   |   | Before |
| 9/3/1974 | SA | Woodson | Signed |   |   | Before |
| 9/4/1974 | CC | Bosman | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | D'Acquisto | Placed on disabled list |   | 8/31/1974 | Before |
| 9/4/1974 | CC | DeCinces | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Essian | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | John | Activated from disabled list |   |   | Before |
| 9/4/1974 | CC | Kirkpatrick | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Kuiper | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Lyttle | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Martinez | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | McEnaney | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Mendoza | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Meyer | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Palmer | Activated from disabled list |   |   | Before |
| 9/4/1974 | CC | Sanders | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Stanhouse | Promoted to active roster |   |   | Before |
| 9/4/1974 | CC | Thomas | Promoted to active roster |   |   | Before |
| 9/4/1974 | DB | Kingman | Promoted to active roster |   |   | Before |
| 9/4/1974 | DB | Mitchell | Promoted to active roster |   |   | Before |
| 9/4/1974 | DB | Valentine | Promoted to active roster |   |   | Before |
| 9/4/1974 | DD | Bradley | Promoted to active roster |   |   | Before |
| 9/4/1974 | DD | Chambliss | Promoted to active roster |   |   | Before |
| 9/4/1974 | DD | Lemanczyk | Promoted to active roster |   |   | Before |
| 9/4/1974 | JW | Alomar | Promoted to active roster |   |   | Before |
| 9/4/1974 | JW | Pole | Promoted to active roster |   |   | Before |
| 9/4/1974 | KW | Hutson | Promoted to active roster |   |   | Before |
| 9/4/1974 | KW | Kendall | Promoted to active roster |   |   | Before |
| 9/4/1974 | KW | Lockwood | Promoted to active roster |   |   | Before |
| 9/4/1974 | KW | Mitterwald | Promoted to active roster |   |   | Before |
| 9/4/1974 | KW | Robinson | Promoted to active roster |   |   | Before |
| 9/4/1974 | Lew | Phillips | Promoted to active roster |   |   | Before |
| 9/4/1974 | Lew | Santo | Promoted to active roster |   |   | Before |
| 9/4/1974 | LM | Etchebarren | Promoted to active roster |   |   | Before |
| 9/4/1974 | LM | McGlothen | Promoted to active roster |   |   | Before |
| 9/4/1974 | LM | Oglivie | Promoted to active roster |   |   | Before |
| 9/4/1974 | LM | Rau | Promoted to active roster |   |   | Before |
| 9/4/1974 | LM | Tyson | Promoted to active roster |   |   | Before |
| 9/4/1974 | Mac | Albury | Promoted to active roster |   |   | Before |
| 9/4/1974 | Mac | Dunn | Promoted to active roster |   |   | Before |
| 9/4/1974 | Mac | Hansen | Promoted to active roster |   |   | Before |
| 9/4/1974 | Mac | Kaline | Promoted to active roster |   |   | Before |
| 9/4/1974 | Mac | Knox | Promoted to active roster |   |   | Before |
| 9/4/1974 | Mac | Taylor | Promoted to active roster |   |   | Before |
| 9/4/1974 | MI | Moses | Promoted to active roster |   |   | Before |
| 9/4/1974 | MI | Walker | Promoted to active roster |   |   | Before |
| 9/4/1974 | SA | Alexander | Promoted to active roster |   |   | Before |
| 9/4/1974 | SA | Bradford | Activated from disabled list |   |   | Before |
| 9/4/1974 | SA | Bryant | Demoted to reserve roster |   |   | Before |
| 9/4/1974 | SA | Carty | Promoted to active roster |   |   | Before |
| 9/4/1974 | SA | Ferrer | Promoted to active roster |   |   | Before |
| 9/4/1974 | SA | Gogolewski | Promoted to active roster |   |   | Before |
| 9/4/1974 | SA | Leonard | Demoted to reserve roster |   |   | Before |
| 9/4/1974 | SA | McAndrew | Signed |   |   | Before |
| 9/4/1974 | SA | Morris | Promoted to active roster |   |   | Before |
| 9/4/1974 | SA | Mota | Promoted to active roster |   |   | Before |
| 9/4/1974 | SS | Burgmeier | Promoted to active roster |   |   | Before |
| 9/4/1974 | SS | Moffitt | Promoted to active roster |   |   | Before |
| 9/4/1974 | SS | Oates | Promoted to active roster |   |   | Before |
| 9/4/1974 | SS | Plummer | Activated from disabled list |   |   | Before |
| 9/4/1974 | WCF | Stone | Promoted to active roster |   |   | Before |
| 9/4/1974 | WCF | Willoughby | Demoted to reserve roster |   |   | Before |
| 9/4/1974 | WL | Billingham | Placed on disabled list |   | 9/2/1974 | Before |
| 9/4/1974 | WL | May,L | Promoted to active roster |   |   | Before |
| 9/4/1974 | WL | Melton | Placed on disabled list |   | 8/27/1974 | Before |
| 9/4/1974 | WL | Richard | Activated from disabled list |   |   | Before |
| 9/4/1974 | WL | Sims | Activated from disabled list |   |   | Before |
| 9/4/1974 | WL | Sprague | Activated from disabled list |   |   | Before |
| 9/11/1974 | DD | Acosta | Demoted to reserve roster |   |   | Before |
| 9/11/1974 | DD | Murray | Demoted to reserve roster |   |   | Before |
| 9/11/1974 | DD | Pizarro | Demoted to reserve roster |   |   | Before |
| 9/11/1974 | SS | Horton | Demoted to reserve roster |   |   | Before |
| 9/11/1974 | SS | Horton | Promoted to active roster |   |   | Before |
| 9/15/1974 | MI | Fosse | Promoted to active roster |   |   | Before |
| 9/17/1974 | EB | Beckert | Promoted to active roster |   |   | Before |
| 9/17/1974 | EB | Blair | Demoted to reserve roster |   |   | Before |
| 9/17/1974 | SA | Lovitto | Signed |   |   | Before |
| 9/18/1974 | DD | Acosta | Promoted to active roster |   |   | Before |
| 9/18/1974 | DD | Murray | Promoted to active roster |   |   | Before |
| 9/18/1974 | DD | Pizarro | Promoted to active roster |   |   | Before |
| 9/18/1974 | Lew | Scherman | Signed |   |   | Before |
| 9/18/1974 | SA | Bevacqua | Demoted to reserve roster |   |   | Before |
| 9/18/1974 | SA | Fuller | Signed |   |   | Before |
| 9/18/1974 | SS | Horton | Demoted to reserve roster |   |   | Before |
| 9/20/1974 | Mac | Dunn | Demoted to reserve roster |   |   | Before |
| 9/23/1974 | CC | Caldwell | Demoted to reserve roster |   |   | Before |
| 9/23/1974 | CC | D'Acquisto | Activated from disabled list |   |   | Before |
| 9/23/1974 | CC | Martinez | Demoted to reserve roster |   |   | Before |
| 9/23/1974 | DD | Acosta | Demoted to reserve roster |   |   | Before |
| 9/23/1974 | SS | Dempsey | Demoted to reserve roster |   |   | Before |
| 9/23/1974 | WCF | Palmer | Promoted to active roster |   |   | Before |
| 9/26/1974 | DD | Murray | Demoted to reserve roster |   |   | Before |
| 9/26/1974 | KW | Mangual | Promoted to active roster |   |   | Before |
| 9/26/1974 | Lew | Scherman | Signed |   |   | Before |
| 9/26/1974 | SS | Leon | Demoted to reserve roster |   |   | Before |
| 9/26/1974 | SS | Yeager | Demoted to reserve roster |   |   | Before |
| 9/30/1974 | WL | Billingham | Activated from disabled list |   |   | Before |
| 9/30/1974 | WL | Melton | Activated from disabled list |   |   | Before |
| 9/30/1974 | WL | Michael | Demoted to reserve roster |   |   | Before |
| 9/30/1974 | WL | Richard | Activated from disabled list |   |   | Before |
| 9/30/1974 | WL | Sims | Activated from disabled list |   |   | Before |
| 10/2/1974 | SA | Bare | Signed |   |   | Before |
| 10/2/1974 | SA | Nelson | Demoted to reserve roster |   |   | Before |