| Transactions | ||||||
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/30/2008 | CK | Logan | Signed |   |   | Before |
| 4/30/2008 | CK | Moseley | Signed |   |   | Before |
| 4/30/2008 | CK | Rodriguez,S | Released |   |   | Before |
| 4/30/2008 | CO | Condrey | Signed |   |   | Before |
| 4/30/2008 | CO | Gonzalez,Al | Released |   |   | Before |
| 4/30/2008 | CO | Gonzalez,Al | Signed |   |   | Before |
| 4/30/2008 | CO | Hampson | Released |   |   | Before |
| 4/30/2008 | CO | Hernandez,Lu | Released |   |   | Before |
| 4/30/2008 | CO | Ryan,Br | Signed |   |   | Before |
| 4/30/2008 | JB | Aybar,E | Signed |   |   | Before |
| 4/30/2008 | KB | Coffey | Signed |   |   | Before |
| 4/30/2008 | KB | Janish | Signed |   |   | Before |
| 4/30/2008 | KB | Ojeda | Released |   |   | Before |
| 4/30/2008 | KB | Ojeda | Released |   |   | Before |
| 4/30/2008 | KB | Ojeda | Signed |   |   | Before |
| 4/30/2008 | KB | Willis | Released |   |   | Before |
| 4/30/2008 | KB | Willis | Released |   |   | Before |
| 4/30/2008 | KB | Willis | Signed |   |   | Before |
| 4/30/2008 | KC | Arias,J | Signed |   |   | Before |
| 4/30/2008 | KC | Dillon | Released |   |   | Before |
| 4/30/2008 | KC | Dillon | Signed |   |   | Before |
| 4/30/2008 | KC | Feldman | Signed |   |   | Before |
| 4/30/2008 | KC | Waters | Signed |   |   | Before |
| 4/30/2008 | KC | Wolfe | Released |   |   | Before |
| 4/30/2008 | KC | Wolfe | Signed |   |   | Before |
| 4/30/2008 | LL | Easley | Released |   |   | Before |
| 4/30/2008 | LL | Ozuna | Signed |   |   | Before |
| 4/30/2008 | LL | Rivas | Released |   |   | Before |
| 4/30/2008 | LL | Sampson | Signed |   |   | Before |
| 4/30/2008 | MR | Bailey,J | Released |   |   | Before |
| 4/30/2008 | MR | Kobayashi | Signed |   |   | Before |
| 4/30/2008 | MR | McClain | Released |   |   | Before |
| 4/30/2008 | MR | Redmond | Signed |   |   | Before |
| 4/30/2008 | MR | Sammons | Released |   |   | Before |
| 4/30/2008 | MR | Seay | Signed |   |   | Before |
| 4/30/2008 | SH | Beam | Released |   |   | Before |
| 4/30/2008 | SH | Chulk | Signed |   |   | Before |
| 4/30/2008 | SH | Geer | Signed |   |   | Before |
| 4/30/2008 | SH | Mahay | Released |   |   | Before |
| 4/30/2008 | SH | Meyer | Signed |   |   | Before |
| 4/30/2008 | SH | Sheffield | Released |   |   | Before |
| 4/30/2008 | SH | Sheffield | Demoted to reserve roster |   |   | Before |
| 4/30/2008 | SI | Parrish | Signed |   |   | Before |
| 4/30/2008 | SI | Quintanilla | Released |   |   | Before |
| 4/30/2008 | SI | Quintanilla | Released |   |   | Before |
| 4/30/2008 | SI | Quintanilla | Signed |   |   | Before |
| 4/30/2008 | SP | Cotts | Released |   |   | Before |
| 4/30/2008 | SP | Johnson,Ro | Signed |   |   | Before |
| 4/30/2008 | SS | Anderson,M | Released |   |   | Before |
| 4/30/2008 | SS | Bynum | Released |   |   | Before |
| 4/30/2008 | SS | Helms | Signed |   |   | Before |
| 4/30/2008 | SS | Hernandez,A | Signed |   |   | Before |
| 4/30/2008 | SS | Mather | Released |   |   | Before |
| 4/30/2008 | SS | Tracy,C | Signed |   |   | Before |
| 4/30/2008 | WW | Jennings | Signed |   |   | Before |
| 4/30/2008 | WW | Ozuna | Released |   |   | Before |
| 4/30/2008 | WW | Ozuna | Signed |   |   | Before |
| 4/30/2008 | WW | Quinlan | Released |   |   | Before |
| 4/30/2008 | WW | Sweeney,Mi | Signed |   |   | Before |
| 5/1/2008 | KC | Dillon | Released |   |   | Before |
| 5/1/2008 | KC | Wolfe | Released |   |   | Before |
| 6/1/2008 | BB | Batista | Signed |   |   | Before |
| 6/1/2008 | BB | Batista | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | CO | Gonzalez,L | Released |   |   | Before |
| 6/1/2008 | CO | Ledezma | Released |   |   | Before |
| 6/1/2008 | CO | Ojeda | Signed |   |   | Before |
| 6/1/2008 | CO | Sheffield | Signed |   |   | Before |
| 6/1/2008 | GO | Barton,B | Signed |   |   | Before |
| 6/1/2008 | GO | Nippert | Released |   |   | Before |
| 6/1/2008 | KC | Arias,J | Released |   |   | Before |
| 6/1/2008 | KC | Bonser | Released |   |   | Before |
| 6/1/2008 | KC | Ensberg | Released |   |   | Before |
| 6/1/2008 | KC | Hernandez,Li | Signed |   |   | Before |
| 6/1/2008 | KC | Raburn | Signed |   |   | Before |
| 6/1/2008 | KC | Willis | Signed |   |   | Before |
| 6/1/2008 | KC | Willis | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | LL | Dillon | Signed |   |   | Before |
| 6/1/2008 | LL | Dillon | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | LL | Nix,J | Signed |   |   | Before |
| 6/1/2008 | LL | Nix,J | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | LL | O'Day | Signed |   |   | Before |
| 6/1/2008 | LL | O'Day | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | LL | Ozuna | Released |   |   | Before |
| 6/1/2008 | LL | Salazar,O | Released |   |   | Before |
| 6/1/2008 | LT | Boone | Released |   |   | Before |
| 6/1/2008 | LT | Rodriguez,S | Signed |   |   | Before |
| 6/1/2008 | LT | Rodriguez,S | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | PH | Chacon | Released |   |   | Before |
| 6/1/2008 | PH | Loe | Released |   |   | Before |
| 6/1/2008 | PH | Podsednik | Signed |   |   | Before |
| 6/1/2008 | PH | Podsednik | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | PH | Thatcher | Signed |   |   | Before |
| 6/1/2008 | SH | Bedard | Promoted to active roster |   |   | Before |
| 6/1/2008 | SH | Gomes,J | Signed |   |   | Before |
| 6/1/2008 | SH | Gomes,J | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | SH | Hill,S | Released |   |   | Before |
| 6/1/2008 | SH | Larish | Signed |   |   | Before |
| 6/1/2008 | SH | Larish | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | SH | Wright,W | Released |   |   | Before |
| 6/1/2008 | SI | Easley | Signed |   |   | Before |
| 6/1/2008 | SI | Easley | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | SI | Hensley | Released |   |   | Before |
| 6/1/2008 | SI | Langerhans | Released |   |   | Before |
| 6/1/2008 | SI | Vizquel | Signed |   |   | Before |
| 6/1/2008 | SI | Vizquel | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | SP | Quintero | Released |   |   | Before |
| 6/1/2008 | SP | Young,Delw | Signed |   |   | Before |
| 6/1/2008 | SP | Young,Delw | Demoted to reserve roster |   |   | Before |
| 6/1/2008 | WW | Jennings | Released |   |   | Before |
| 6/1/2008 | WW | Maier | Signed |   |   | Before |
| 6/1/2008 | WW | Maier | Demoted to reserve roster |   |   | Before |
| 6/30/2008 | CK | Ayala | Signed |   |   | Before |
| 6/30/2008 | CK | Badenhop | Signed |   |   | Before |
| 6/30/2008 | CK | Logan | Released |   |   | Before |
| 6/30/2008 | CK | Logan | Signed |   |   | Before |
| 6/30/2008 | CK | Moseley | Released |   |   | Before |
| 6/30/2008 | CK | Moseley | Signed |   |   | Before |
| 6/30/2008 | CO | Gonzalez,Al | Signed |   |   | Before |
| 6/30/2008 | CO | Pagan | Released |   |   | Before |
| 6/30/2008 | FL | Ardoin | Released |   |   | Before |
| 6/30/2008 | FL | Wright,W | Signed |   |   | Before |
| 6/30/2008 | GO | LaRue | Signed |   |   | Before |
| 6/30/2008 | JD | Iguchi | Released |   |   | Before |
| 6/30/2008 | JD | Iguchi | Signed |   |   | Before |
| 6/30/2008 | JD | Rasner | Signed |   |   | Before |
| 6/30/2008 | LL | Burke,J | Signed |   |   | Before |
| 6/30/2008 | LL | Christian | Signed |   |   | Before |
| 6/30/2008 | LL | Dillon | Released |   |   | Before |
| 6/30/2008 | LL | Dillon | Signed |   |   | Before |
| 6/30/2008 | LL | Kearns | Released |   |   | Before |
| 6/30/2008 | LL | Kearns | Signed |   |   | Before |
| 6/30/2008 | LL | Salazar,O | Signed |   |   | Before |
| 6/30/2008 | PH | Barrett | Released |   |   | Before |
| 6/30/2008 | PH | Barrett | Signed |   |   | Before |
| 6/30/2008 | PH | Brown,E | Released |   |   | Before |
| 6/30/2008 | PH | Brown,E | Signed |   |   | Before |
| 6/30/2008 | PH | Mather | Signed |   |   | Before |
| 6/30/2008 | PH | Moeller | Signed |   |   | Before |
| 6/30/2008 | PH | Thatcher | Released |   |   | Before |
| 6/30/2008 | PH | Thatcher | Signed |   |   | Before |
| 6/30/2008 | PH | Vargas | Signed |   |   | Before |
| 6/30/2008 | SH | Bard | Signed |   |   | Before |
| 6/30/2008 | SH | Chulk | Released |   |   | Before |
| 6/30/2008 | SH | Geer | Released |   |   | Before |
| 6/30/2008 | SH | Nippert | Signed |   |   | Before |
| 6/30/2008 | SI | Arias,J | Signed |   |   | Before |
| 6/30/2008 | SI | Jennings | Signed |   |   | Before |
| 6/30/2008 | SI | Parrish | Released |   |   | Before |
| 6/30/2008 | SI | Walker,T | Released |   |   | Before |
| 6/30/2008 | SS | Gonzalez,L | Signed |   |   | Before |
| 6/30/2008 | SS | Robertson,N | Released |   |   | Before |
| 7/1/2008 | CK | Logan | Released |   |   | Before |
| 7/1/2008 | CK | Moseley | Released |   |   | Before |
| 7/1/2008 | JD | Iguchi | Released |   |   | Before |
| 7/1/2008 | LL | Dillon | Released |   |   | Before |
| 7/1/2008 | LL | Kearns | Released |   |   | Before |
| 7/1/2008 | PH | Barrett | Released |   |   | Before |
| 7/1/2008 | PH | Brown,E | Released |   |   | Before |
| 7/1/2008 | PH | Thatcher | Released |   |   | Before |
| 7/30/2008 | CK | Logan | Released |   |   | Before |
| 7/30/2008 | CK | Logan | Signed |   |   | Before |
| 7/30/2008 | CK | Moseley | Released |   |   | Before |
| 7/30/2008 | CK | Moseley | Signed |   |   | Before |
| 7/30/2008 | JD | Iguchi | Released |   |   | Before |
| 7/30/2008 | JD | Iguchi | Signed |   |   | Before |
| 7/30/2008 | LL | Dillon | Released |   |   | Before |
| 7/30/2008 | LL | Dillon | Signed |   |   | Before |
| 7/30/2008 | LL | Kearns | Released |   |   | Before |
| 7/30/2008 | LL | Kearns | Signed |   |   | Before |
| 7/30/2008 | PH | Barrett | Released |   |   | Before |
| 7/30/2008 | PH | Barrett | Signed |   |   | Before |
| 7/30/2008 | PH | Brown,E | Released |   |   | Before |
| 7/30/2008 | PH | Brown,E | Signed |   |   | Before |
| 7/30/2008 | PH | Thatcher | Released |   |   | Before |
| 7/30/2008 | PH | Thatcher | Signed |   |   | Before |
| 8/1/2008 | BB | Denorfia | Released |   |   | Before |
| 8/1/2008 | BB | Langerhans | Signed |   |   | Before |
| 8/1/2008 | CO | Heilman | Released |   |   | Before |
| 8/1/2008 | CO | Mota | Signed |   |   | Before |
| 8/1/2008 | CO | Ohman | Released |   |   | Before |
| 8/1/2008 | CO | Pagan | Signed |   |   | Before |
| 8/1/2008 | DV | Casilla,S | Released |   |   | Before |
| 8/1/2008 | DV | Gomez,Ch | Signed |   |   | Before |
| 8/1/2008 | DV | Misch | Released |   |   | Before |
| 8/1/2008 | DV | Ozuna | Signed |   |   | Before |
| 8/1/2008 | GO | Kearns | Signed |   |   | Before |
| 8/1/2008 | GO | Ledezma | Signed |   |   | Before |
| 8/1/2008 | GO | Towles | Released |   |   | Before |
| 8/1/2008 | GO | Walker,T | Signed |   |   | Before |
| 8/1/2008 | LK | Betemit | Released |   |   | Before |
| 8/1/2008 | LK | Cassel | Released |   |   | Before |
| 8/1/2008 | LK | Guardado | Signed |   |   | Before |
| 8/1/2008 | LK | Hampson | Signed |   |   | Before |
| 8/1/2008 | LK | Taschner | Signed |   |   | Before |
| 8/1/2008 | LK | Yabu | Released |   |   | Before |
| 8/1/2008 | LL | Ardoin | Signed |   |   | Before |
| 8/1/2008 | LL | Christian | Released |   |   | Before |
| 8/1/2008 | LL | Eyre | Signed |   |   | Before |
| 8/1/2008 | LL | Hall,T | Released |   |   | Before |
| 8/1/2008 | MR | Mahay | Signed |   |   | Before |
| 8/1/2008 | MR | Manning | Released |   |   | Before |
| 8/1/2008 | PH | Shelton | Signed |   |   | Before |
| 8/1/2008 | SH | Byrnes | Released |   |   | Before |
| 8/1/2008 | SH | Byrnes | Signed |   |   | Before |
| 8/1/2008 | SH | Chavez,En | Released |   |   | Before |
| 8/1/2008 | SH | Hensley | Released |   |   | Before |
| 8/1/2008 | SH | Hensley | Signed |   |   | Before |
| 8/1/2008 | SH | Logan | Signed |   |   | Before |
| 8/1/2008 | SH | Mathis,D | Signed |   |   | Before |
| 8/1/2008 | SH | McCarthy | Released |   |   | Before |
| 8/1/2008 | SI | Cash | Released |   |   | Before |
| 8/1/2008 | SI | Quintero | Signed |   |   | Before |
| 8/1/2008 | SP | Boggs,B | Released |   |   | Before |
| 8/1/2008 | SP | Quinlan | Signed |   |   | Before |
| 8/1/2008 | SS | Backe | Released |   |   | Before |
| 8/1/2008 | SS | Patterson,E | Signed |   |   | Before |
| 12/30/2008 | BB | Johnson,N | Acquired via trade | LL |   | After |
| 12/30/2008 | JB | Broxton | Acquired via trade | WW |   | After |
| 12/30/2008 | JB | Bruney | Traded away | WW |   | After |
| 12/30/2008 | JB | Devine | Traded away | WW |   | After |
| 12/30/2008 | JB | DeWitt | Acquired via trade | WW |   | After |
| 12/30/2008 | JB | Reynolds,M | Traded away | PH |   | After |
| 12/30/2008 | JB | Wilson,Br | Acquired via trade | PH |   | After |
| 12/30/2008 | LL | Blum | Acquired via trade | TB |   | After |
| 12/30/2008 | LL | Johnson,N | Traded away | BB |   | After |
| 12/30/2008 | MR | Garciaparra | Traded away | WW |   | After |
| 12/30/2008 | MR | Perkins | Acquired via trade | WW |   | After |
| 12/30/2008 | PH | Reynolds,M | Acquired via trade | JB |   | After |
| 12/30/2008 | PH | Wilson,Br | Traded away | JB |   | After |
| 12/30/2008 | TB | Blum | Traded away | LL |   | After |
| 12/30/2008 | TB | Cuddyer | Traded away | WW |   | After |
| 12/30/2008 | TB | Dempster | Traded away | WW |   | After |
| 12/30/2008 | WW | Broxton | Traded away | JB |   | After |
| 12/30/2008 | WW | Bruney | Acquired via trade | JB |   | After |
| 12/30/2008 | WW | Cuddyer | Acquired via trade | TB |   | After |
| 12/30/2008 | WW | Dempster | Acquired via trade | TB |   | After |
| 12/30/2008 | WW | Devine | Acquired via trade | JB |   | After |
| 12/30/2008 | WW | DeWitt | Traded away | JB |   | After |
| 12/30/2008 | WW | Garciaparra | Acquired via trade | MR |   | After |
| 12/30/2008 | WW | Perkins | Traded away | MR |   | After |
| 1/3/2009 | FL | Cuddyer | Acquired via trade | WW |   | After |
| 1/3/2009 | WW | Cuddyer | Traded away | FL |   | After |
| 1/5/2009 | DV | Casilla,S | Acquired via trade | LT |   | After |
| 1/5/2009 | DV | Wuertz | Acquired via trade | LT |   | After |
| 1/5/2009 | LT | Casilla,S | Traded away | DV |   | After |
| 1/5/2009 | LT | Castro,R | Acquired via trade | PH |   | After |
| 1/5/2009 | LT | Church | Traded away | PH |   | After |
| 1/5/2009 | LT | Pena,TR | Acquired via trade | PH |   | After |
| 1/5/2009 | LT | Romero,J | Acquired via trade | PH |   | After |
| 1/5/2009 | LT | Wuertz | Traded away | DV |   | After |
| 1/5/2009 | PH | Castro,R | Traded away | LT |   | After |
| 1/5/2009 | PH | Church | Acquired via trade | LT |   | After |
| 1/5/2009 | PH | Pena,TR | Traded away | LT |   | After |
| 1/5/2009 | PH | Romero,J | Traded away | LT |   | After |
| 1/6/2009 | GO | Hochevar | Acquired via trade | SP |   | After |
| 1/6/2009 | GO | Kotchman | Traded away | SP |   | After |
| 1/6/2009 | GO | Sonnanstine | Acquired via trade | SP |   | After |
| 1/6/2009 | GO | Soto | Acquired via trade | SP |   | After |
| 1/6/2009 | GO | Sweeney,R | Traded away | SP |   | After |
| 1/6/2009 | GO | Tulowitzki | Traded away | SP |   | After |
| 1/6/2009 | SP | Hochevar | Traded away | GO |   | After |
| 1/6/2009 | SP | Kotchman | Acquired via trade | GO |   | After |
| 1/6/2009 | SP | Sonnanstine | Traded away | GO |   | After |
| 1/6/2009 | SP | Soto | Traded away | GO |   | After |
| 1/6/2009 | SP | Sweeney,R | Acquired via trade | GO |   | After |
| 1/6/2009 | SP | Tulowitzki | Acquired via trade | GO |   | After |
| 1/13/2009 | LT | Breslow | Acquired via trade | SI |   | After |
| 1/13/2009 | LT | Romero,J | Traded away | SI |   | After |
| 1/13/2009 | LT | Schierholtz | Traded away | SI |   | After |
| 1/13/2009 | SI | Breslow | Traded away | LT |   | After |
| 1/13/2009 | SI | Romero,J | Acquired via trade | LT |   | After |
| 1/13/2009 | SI | Schierholtz | Acquired via trade | LT |   | After |
| 3/3/2009 | CK | Smith,S | Traded away | PH |   | After |
| 3/3/2009 | CO | Punto | Traded away | WW |   | After |
| 3/3/2009 | PH | Smith,S | Acquired via trade | CK |   | After |
| 3/3/2009 | WW | Punto | Acquired via trade | CO |   | After |
| 3/9/2009 | FL | McLouth | Traded away | LT |   | After |
| 3/9/2009 | FL | Scherzer | Acquired via trade | LT |   | After |
| 3/9/2009 | FL | Teagarden | Acquired via trade | LT |   | After |
| 3/9/2009 | LT | Blanco,H | Acquired via trade | SH |   | After |
| 3/9/2009 | LT | McLouth | Acquired via trade | FL |   | After |
| 3/9/2009 | LT | Scherzer | Traded away | FL |   | After |
| 3/9/2009 | LT | Teagarden | Traded away | FL |   | After |
| 3/9/2009 | SH | Blanco,H | Traded away | LT |   | After |
| 3/24/2009 | LT | Gerut | Traded away | SI |   | After |
| 3/24/2009 | LT | Romero,J | Acquired via trade | SI |   | After |
| 3/24/2009 | SI | Gerut | Acquired via trade | LT |   | After |
| 3/24/2009 | SI | Romero,J | Traded away | LT |   | After |
| 3/25/2009 | JB | Ryan,D | Traded away | LT |   | After |
| 3/25/2009 | LT | Ryan,D | Acquired via trade | JB |   | After |