| | | Sunday, December 23rd, 2012 | | Signed free agent LF José Carlos Mata to a minor league contract. |
| Friday, December 21st, 2012 | | Signed Lou Latulippe to a minor league contract with a signing bonus of $6,210,000. |
| Monday, December 17th, 2012 | | Drafted SP Lou Latulippe in the 2012 first-year player draft (Round 1, Pick 2, 2nd overall pick). | | Drafted 2B Naomi Murata in the 2012 first-year player draft (Round 2, Pick 2, 26th overall pick). | | Drafted SP Tadaaki Tahara in the 2012 first-year player draft (Round 3, Pick 2, 50th overall pick). | | Drafted CF Rick Oram in the 2012 first-year player draft (Round 4, Pick 2, 74th overall pick). | | Drafted LF Yoshitoki Ichihara in the 2012 first-year player draft (Round 5, Pick 2, 98th overall pick). | | Drafted 2B Scotty Frank in the 2012 first-year player draft (Round 6, Pick 2, 122nd overall pick). | | Drafted C Lowell Corderoy in the 2012 first-year player draft (Round 7, Pick 2, 146th overall pick). | | Drafted 3B Paul Harding in the 2012 first-year player draft (Round 8, Pick 2, 170th overall pick). | | Drafted C Wayne Strickland in the 2012 first-year player draft (Round 9, Pick 2, 194th overall pick). | | Drafted SP Sofiane Valentin in the 2012 first-year player draft (Round 10, Pick 2, 218th overall pick). | | Drafted SP Leroy Pittman in the 2012 first-year player draft (Round 11, Pick 2, 242nd overall pick). | | Drafted MR Horiuchi Watanabe in the 2012 first-year player draft (Round 12, Pick 2, 266th overall pick). |
| Saturday, December 8th, 2012 | | Signed free agent SP Terence McKinley to a 5-year contract worth a total of $44,000,000. |
| Wednesday, November 21st, 2012 | | SS Jim Crawford received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Danny Burris received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Peter Kelly received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Harvey Jones received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Don Schwartz received a 1-year contract through automatic renewal worth a total of $520,000. | | MR Diego Avilés received a 1-year contract through automatic renewal worth a total of $510,000. | | SS George Fields received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Milton Fisher received a 1-year contract through automatic renewal worth a total of $510,000. | | C Emmett McSorley received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Carlos Robles received a 1-year contract through automatic renewal worth a total of $510,000. | | RF Daniel Terry received a 1-year contract through automatic renewal worth a total of $510,000. | | C Brendon Palmer received a 1-year contract through automatic renewal worth a total of $510,000. | | 3B Fernando Ramírez received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Elvis Morgan received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Steve Schneider received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Marlon Bentley received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Fred Jones becomes a free-agent. | | CF Joe O'Neal received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Paul Reddin received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Leslie Whitney received a 1-year contract through automatic renewal worth a total of $510,000. | | C Arlen Dixon received a 1-year contract through automatic renewal worth a total of $510,000. | | 1B Javier Reyes received a 1-year contract through automatic renewal worth a total of $510,000. | | RF Allen Greene received a 1-year contract through automatic renewal worth a total of $500,000. |
| Sunday, November 18th, 2012 | | MR Matt Hall received a 1-year contract through arbitration worth a total of $935,000. | | MR Alejandro Cabrera becomes a free-agent. | | SP Phil Graves becomes a free-agent. | | MR Simon Rigney received a 1-year contract through arbitration worth a total of $750,000. | | SP Howard Chamness becomes a free-agent. |
| Saturday, November 3rd, 2012 | | Signed free agent CF Pedro Cuellar to a minor league contract. |
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