| | | Monday, December 17th, 2012 | | Drafted 1B Mitsuoki Suzuki in the 2012 first-year player draft (Round 1, Pick 19, 19th overall pick). | | Drafted 2B Koki Nakayama in the 2012 first-year player draft (Round 2, Pick 19, 43rd overall pick). | | Drafted SP Brian Collette in the 2012 first-year player draft (Round 3, Pick 19, 67th overall pick). | | Drafted RF Rich Latimer in the 2012 first-year player draft (Round 4, Pick 19, 91st overall pick). | | Drafted 1B Bradford Bale in the 2012 first-year player draft (Round 5, Pick 19, 115th overall pick). | | Drafted SP Takanobu Tanaka in the 2012 first-year player draft (Round 6, Pick 19, 139th overall pick). | | Drafted LF Mark Churchill in the 2012 first-year player draft (Round 7, Pick 19, 163rd overall pick). | | Drafted SP Payton Parsons in the 2012 first-year player draft (Round 8, Pick 19, 187th overall pick). | | Drafted C Toshikazu Sakai in the 2012 first-year player draft (Round 9, Pick 19, 211st overall pick). | | Drafted LF Ben Mays in the 2012 first-year player draft (Round 10, Pick 19, 235th overall pick). | | Drafted RF Nicolas Duez in the 2012 first-year player draft (Round 11, Pick 19, 259th overall pick). | | Drafted SP John Hines in the 2012 first-year player draft (Round 12, Pick 19, 283rd overall pick). |
| Saturday, December 1st, 2012 | | Placed SP Evan Warner on the 40-man roster. | | Placed MR Ben Carlton on the Double A 14-day disabled list, retroactive to 09/19/2012. | | Placed SP Pat Everhart on the active roster. | | Activated SP Pat Everhart from the disabled list. |
| Wednesday, November 21st, 2012 | | SP Evan Warner received a 1-year contract through automatic renewal worth a total of $510,000. | | CL Gary Payne received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Sean Bowman received a 1-year contract through automatic renewal worth a total of $510,000. | | LF Tommy Harris becomes a free-agent. | | 3B Andy Miller received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Jeremy Flanagan received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Jim Dorsey becomes a free-agent. | | SP Davey Holmes received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Al Jackson received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Pat Everhart received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Scott Armstrong received a 1-year contract through automatic renewal worth a total of $510,000. | | RF Charlie McCann received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Ryan Turner received a 1-year contract through automatic renewal worth a total of $500,000. | | 1B Tommy McCauley received a 1-year contract through automatic renewal worth a total of $510,000. | | C Elroy Anderson becomes a free-agent. | | SS Dan Blankenship received a 1-year contract through automatic renewal worth a total of $510,000. | | RF Ed Hill received a 1-year contract through automatic renewal worth a total of $510,000. | | C Ronnie Dudley received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Keith Kramer becomes a free-agent. | | RF Neil Adams becomes a free-agent. | | LF Johnny Luhgow becomes a free-agent. | | SP Sean Miles becomes a free-agent. | | CF David Vadnais becomes a free-agent. |
| Sunday, November 18th, 2012 | | LF José García received a 1-year contract through arbitration worth a total of $750,000. | | MR Allen Gardner received a 1-year contract through arbitration worth a total of $750,000. |
| Friday, November 9th, 2012 | | Signed MR Dave Walton to a 5-year contract extension worth a total of $27,000,000. |
| Saturday, November 3rd, 2012 | | Signed hitting coach Pedro Manuel to a 1-year, $300,000 per year contract. |
| Friday, November 2nd, 2012 | | Signed team doctor Dudley Maynard to a 2-year, $750,000 per year contract. |
| Thursday, November 1st, 2012 | | Signed LF Chance Everett to a 4-year contract extension worth a total of $37,000,000. | | Signed MR José Guevara to a 4-year contract extension worth a total of $18,000,000. | | Signed MR Kent Rose to a 7-year contract extension worth a total of $44,000,000. |
| Sunday, October 28th, 2012 | | Hitting Coach Matt Haggart leaves the team, his contract was not renewed. | | Team Trainer José Medina leaves the team, his contract was not renewed. |
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