| Transactions | ||||||
| Date | Team | Player | Type | OthTm | EffDate | When |
| 5/1/2005 | BEA | Ankiel | Released |   |   | Before |
| 5/1/2005 | BEA | Sweeney | Signed |   |   | Before |
| 5/1/2005 | CHE | Bigbie | Acquired via trade | KEN |   | After |
| 5/1/2005 | CHE | Maddux | Traded away | KEN |   | After |
| 5/1/2005 | KEN | Bigbie | Traded away | CHE |   | After |
| 5/1/2005 | KEN | Maddux | Acquired via trade | CHE |   | After |
| 5/1/2005 | LAH | Damon | Traded away | PHS |   | After |
| 5/1/2005 | LAH | Freel | Traded away | PHS |   | After |
| 5/1/2005 | LAH | Polanco | Acquired via trade | PHS |   | After |
| 5/1/2005 | LAH | Radke | Acquired via trade | PHS |   | After |
| 5/1/2005 | LAH | Williams | Traded away | PHS |   | After |
| 5/1/2005 | PHS | Franklin | Released |   |   | Before |
| 5/1/2005 | PHS | Damon | Acquired via trade | LAH |   | After |
| 5/1/2005 | PHS | Freel | Acquired via trade | LAH |   | After |
| 5/1/2005 | PHS | Polanco | Traded away | LAH |   | After |
| 5/1/2005 | PHS | Radke | Traded away | LAH |   | After |
| 5/1/2005 | PHS | Williams | Acquired via trade | LAH |   | After |
| 5/2/2005 | LAH | Spencer | Signed |   |   | Before |
| 5/2/2005 | RIC | Branyan | Promoted to active roster |   |   | Before |
| 5/2/2005 | RIC | Conine | Demoted to reserve roster |   |   | Before |
| 6/30/2005 | FLA | Carroll | Acquired via trade | PHS |   | After |
| 6/30/2005 | FLA | Chacin | Acquired via trade | PHS |   | After |
| 6/30/2005 | FLA | Hall | Acquired via trade | PHS |   | After |
| 6/30/2005 | FLA | Ishii | Traded away | PHS |   | After |
| 6/30/2005 | FLA | Rodriguez | Traded away | PHS |   | After |
| 6/30/2005 | FLA | Rodriguez | Acquired via trade | PHS |   | After |
| 6/30/2005 | FLA | Tejada | Traded away | PHS |   | After |
| 6/30/2005 | KEN | Ohka | Traded away | RIC |   | After |
| 6/30/2005 | KEN | Valentine | Acquired via trade | RIC |   | After |
| 6/30/2005 | PHS | Carroll | Traded away | FLA |   | After |
| 6/30/2005 | PHS | Chacin | Traded away | FLA |   | After |
| 6/30/2005 | PHS | Hall | Traded away | FLA |   | After |
| 6/30/2005 | PHS | Ishii | Acquired via trade | FLA |   | After |
| 6/30/2005 | PHS | Rodriguez | Traded away | FLA |   | After |
| 6/30/2005 | PHS | Rodriguez | Acquired via trade | FLA |   | After |
| 6/30/2005 | PHS | Tejada | Acquired via trade | FLA |   | After |
| 6/30/2005 | RIC | Benitez | Acquired via trade | SMC |   | After |
| 6/30/2005 | RIC | Ohka | Acquired via trade | KEN |   | After |
| 6/30/2005 | RIC | Valentine | Traded away | KEN |   | After |
| 6/30/2005 | SMC | Benitez | Traded away | RIC |   | After |
| 7/1/2005 | BEA | Betemit | Signed |   |   | Before |
| 7/1/2005 | BEA | Sweeney | Released |   |   | Before |
| 7/1/2005 | CHW | Greene | Demoted to reserve roster |   |   | Before |
| 7/1/2005 | CHW | Hudson | Demoted to reserve roster |   |   | Before |
| 7/1/2005 | CHW | Hudson | Promoted to active roster |   |   | Before |
| 7/1/2005 | CHW | Hudson | Demoted to reserve roster |   |   | Before |
| 7/1/2005 | CHW | Seanez | Promoted to active roster |   |   | Before |
| 7/1/2005 | CHW | Seo | Promoted to active roster |   |   | Before |
| 7/1/2005 | CHW | Torrealba | Promoted to active roster |   |   | Before |
| 7/1/2005 | CHW | Tucker | Demoted to reserve roster |   |   | Before |
| 7/1/2005 | CHW | Tucker | Promoted to active roster |   |   | Before |
| 7/1/2005 | CHW | Valverde | Demoted to reserve roster |   |   | Before |
| 7/1/2005 | FLA | Spiezio | Released |   |   | Before |
| 7/1/2005 | PHS | Bloomquist | Signed |   |   | Before |
| 7/1/2005 | PHS | DuBose | Signed |   |   | Before |
| 7/1/2005 | PHS | Lincoln | Signed |   |   | Before |
| 7/1/2005 | PHS | Nomo | Released |   |   | Before |
| 7/1/2005 | PHS | Tsao | Released |   |   | Before |
| 7/1/2005 | RIC | Cotts | Released |   |   | Before |
| 7/1/2005 | RIC | Gonzalez,E | Released |   |   | Before |
| 7/1/2005 | RIC | Kapler | Signed |   |   | Before |
| 7/1/2005 | SMC | Armas | Signed |   |   | Before |
| 7/28/2005 | DUN | aaaUpton | Acquired via trade | RIC |   | After |
| 7/28/2005 | DUN | Wilson,J | Traded away | RIC |   | After |
| 7/28/2005 | JER | Menechino | Traded away | KEN |   | After |
| 7/28/2005 | JER | Mirabelli | Traded away | KEN |   | After |
| 7/28/2005 | KEN | Arroyo | Acquired via trade | NEW |   | After |
| 7/28/2005 | KEN | Dotel | Traded away | NEW |   | After |
| 7/28/2005 | KEN | Foulke | Acquired via trade | NEW |   | After |
| 7/28/2005 | KEN | Maddux | Traded away | NEW |   | After |
| 7/28/2005 | KEN | Menechino | Acquired via trade | JER |   | After |
| 7/28/2005 | KEN | Mirabelli | Acquired via trade | JER |   | After |
| 7/28/2005 | KEN | Mota | Acquired via trade | NEW |   | After |
| 7/28/2005 | KEN | Takatsu | Acquired via trade | NEW |   | After |
| 7/28/2005 | KEN | Valentine | Traded away | NEW |   | After |
| 7/28/2005 | KEN | Vogelsong | Traded away | NEW |   | After |
| 7/28/2005 | LAH | aaaHinckley | Acquired via trade | SMC |   | After |
| 7/28/2005 | LAH | aaaOlsen | Traded away | SMC |   | After |
| 7/28/2005 | LAH | aaaReyes | Traded away | SMC |   | After |
| 7/28/2005 | LAH | Guillen | Traded away | SMC |   | After |
| 7/28/2005 | LAH | Mulder | Traded away | SMC |   | After |
| 7/28/2005 | LAH | Santana | Acquired via trade | SMC |   | After |
| 7/28/2005 | NEW | Arroyo | Traded away | KEN |   | After |
| 7/28/2005 | NEW | Dotel | Acquired via trade | KEN |   | After |
| 7/28/2005 | NEW | Foulke | Traded away | KEN |   | After |
| 7/28/2005 | NEW | Maddux | Acquired via trade | KEN |   | After |
| 7/28/2005 | NEW | Mota | Traded away | KEN |   | After |
| 7/28/2005 | NEW | Takatsu | Traded away | KEN |   | After |
| 7/28/2005 | NEW | Valentine | Acquired via trade | KEN |   | After |
| 7/28/2005 | NEW | Vogelsong | Acquired via trade | KEN |   | After |
| 7/28/2005 | RIC | aaaUpton | Traded away | DUN |   | After |
| 7/28/2005 | RIC | Wilson,J | Acquired via trade | DUN |   | After |
| 7/28/2005 | SMC | aaaHinckley | Traded away | LAH |   | After |
| 7/28/2005 | SMC | aaaOlsen | Acquired via trade | LAH |   | After |
| 7/28/2005 | SMC | aaaReyes | Acquired via trade | LAH |   | After |
| 7/28/2005 | SMC | Guillen | Acquired via trade | LAH |   | After |
| 7/28/2005 | SMC | Mulder | Acquired via trade | LAH |   | After |
| 7/28/2005 | SMC | Santana | Traded away | LAH |   | After |
| 8/1/2005 | BEA | Cabrera | Signed |   |   | Before |
| 8/1/2005 | BEA | Riley | Released |   |   | Before |
| 8/1/2005 | CHW | Bennett,G | Signed |   |   | Before |
| 8/1/2005 | CHW | Cash | Signed |   |   | Before |
| 8/1/2005 | CHW | Ginter | Signed |   |   | Before |
| 8/1/2005 | CHW | Greene | Released |   |   | Before |
| 8/1/2005 | CHW | Hollandsworth | Released |   |   | Before |
| 8/1/2005 | CHW | Olivo | Released |   |   | Before |
| 8/1/2005 | DUN | Dempster | Signed |   |   | Before |
| 8/1/2005 | DUN | Gonzalez | Released |   |   | Before |
| 8/1/2005 | DUN | Guthrie | Released |   |   | Before |
| 8/1/2005 | DUN | Hasegawa | Signed |   |   | Before |
| 8/1/2005 | DUN | Koch | Released |   |   | Before |
| 8/1/2005 | DUN | Politte | Signed |   |   | Before |
| 8/1/2005 | JER | Bennett,J | Signed |   |   | Before |
| 8/1/2005 | JER | Blackley | Released |   |   | Before |
| 8/1/2005 | JER | Hollandsworth | Signed |   |   | Before |
| 8/1/2005 | JER | Moeller | Signed |   |   | Before |
| 8/1/2005 | KEN | Mohr | Released |   |   | Before |
| 8/1/2005 | KEN | Thames | Released |   |   | Before |
| 8/1/2005 | LAH | Bocachica | Signed |   |   | Before |
| 8/1/2005 | LAH | Lankford | Signed |   |   | Before |
| 8/1/2005 | LAH | Lofton | Signed |   |   | Before |
| 8/1/2005 | LAH | Mientkiewicz | Released |   |   | Before |
| 8/1/2005 | PHS | Bell | Released |   |   | Before |
| 8/1/2005 | PHS | Brooks | Signed |   |   | Before |
| 8/1/2005 | PHS | Lincoln | Released |   |   | Before |
| 8/1/2005 | PHS | Pellow | Signed |   |   | Before |
| 8/1/2005 | PHS | Ramirez | Signed |   |   | Before |
| 8/1/2005 | PHS | Valent | Released |   |   | Before |
| 8/1/2005 | PHS | Vargas | Released |   |   | Before |
| 8/1/2005 | PHS | Wuertz | Signed |   |   | Before |
| 8/1/2005 | RIC | Cotts | Signed |   |   | Before |
| 8/1/2005 | RIC | Villarreal | Released |   |   | Before |
| 8/1/2005 | SMC | Colome | Released |   |   | Before |
| 8/1/2005 | SMC | DeRosa | Released |   |   | Before |
| 9/1/2005 | CHE | Hernandez | Released |   |   | Before |
| 9/1/2005 | CHE | Olivo | Signed |   |   | Before |
| 9/1/2005 | CHW | Bennett,G | Released |   |   | Before |
| 9/1/2005 | CHW | Cash | Released |   |   | Before |
| 9/1/2005 | CHW | Davis | Signed |   |   | Before |
| 9/1/2005 | CHW | Towers | Signed |   |   | Before |
| 9/1/2005 | CHW | Tucker | Released |   |   | Before |
| 9/1/2005 | CHW | Zeile | Signed |   |   | Before |
| 9/1/2005 | DUN | Bennett,G | Signed |   |   | Before |
| 9/1/2005 | DUN | OVER-Howry | Released |   |   | Before |
| 9/1/2005 | MAD | Atchison | Signed |   |   | Before |
| 9/1/2005 | MAD | Bell | Signed |   |   | Before |
| 9/1/2005 | MAD | Eyre | Released |   |   | Before |
| 9/1/2005 | MAD | Leicester | Signed |   |   | Before |
| 9/1/2005 | MAD | Miller | Released |   |   | Before |
| 9/1/2005 | MAD | Mondesi | Released |   |   | Before |
| 9/1/2005 | MAD | Qualls | Signed |   |   | Before |
| 9/1/2005 | MAD | Witasick | Released |   |   | Before |
| 9/1/2005 | NEW | Grieve | Released |   |   | Before |
| 9/1/2005 | NEW | McEwing | Signed |   |   | Before |
| 9/1/2005 | NEW | Olerud | Released |   |   | Before |
| 9/1/2005 | NEW | Ward | Signed |   |   | Before |
| 9/1/2005 | RIC | Bacsik | Signed |   |   | Before |
| 9/1/2005 | RIC | Crozier | Released |   |   | Before |
| 9/1/2005 | RIC | Flores | Signed |   |   | Before |
| 9/1/2005 | RIC | Glover | Signed |   |   | Before |
| 9/1/2005 | RIC | Glynn | Signed |   |   | Before |
| 9/1/2005 | RIC | Gonzalez | Released |   |   | Before |
| 9/1/2005 | RIC | Gosling | Signed |   |   | Before |
| 9/1/2005 | RIC | House | Released |   |   | Before |
| 9/1/2005 | RIC | Martin | Released |   |   | Before |
| 9/1/2005 | RIC | OVER-Ortiz | Released |   |   | Before |
| 9/1/2005 | RIC | Perez | Released |   |   | Before |
| 9/1/2005 | RIC | Phelps | Signed |   |   | Before |
| 9/1/2005 | RIC | Pickering | Released |   |   | Before |
| 9/1/2005 | RIC | Pratt | Released |   |   | Before |
| 9/1/2005 | RIC | Serrano | Signed |   |   | Before |
| 9/1/2005 | RIC | Stanford | Signed |   |   | Before |