| | | Sunday, December 30th, 2012 | | Signed free agent 2B Qing-nian Shi to a 1-year contract worth a total of $1,450,000. |
| Friday, November 23rd, 2012 | | Placed 2B Ki-moon Pak on the active roster. | | Activated 2B Ki-moon Pak from the 60-day disabled list. | | C Pedro Gonzáles was designated for assignment and placed on waivers. | | SS Jorge García was designated for assignment and placed on waivers. | | 2B Woody Matthews was designated for assignment and placed on waivers. |
| Wednesday, November 21st, 2012 | | RF Lorenzo Rodríguez received a 1-year contract through automatic renewal worth a total of $510,000. | | 3B Javier García received a 1-year contract through automatic renewal worth a total of $510,000. | | RF Stu Barnes received a 1-year contract through automatic renewal worth a total of $510,000. | | C Joe Cote received a 1-year contract through automatic renewal worth a total of $510,000. | | C Michael Frost received a 1-year contract through automatic renewal worth a total of $510,000. | | C Pedro Gonzáles received a 1-year contract through automatic renewal worth a total of $500,000. | | SS Jeffrey Coffman received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Adrián Carne received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Nelson Ingram received a 1-year contract through automatic renewal worth a total of $510,000. | | 1B Brooks Davis received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Ki-moon Pak received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Mike Arnold received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Rafael Romero received a 1-year contract through automatic renewal worth a total of $500,000. | | 3B Rubén Ruíz received a 1-year contract through automatic renewal worth a total of $510,000. | | CL Del Hubble becomes a free-agent. | | SP Sabutai Aravidze received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Miguel Alvarado received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Michael Bryan received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Clarence Wauchope received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Woody Matthews received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Jorge García received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Bob Graybill becomes a free-agent. |
| Sunday, November 18th, 2012 | | MR Darryl Bradshaw received a 1-year contract through arbitration worth a total of $3,600,000. | | MR Chase Burke received a 1-year contract through arbitration worth a total of $1,400,000. | | CL Manuel Marroquín received a 1-year contract through arbitration worth a total of $750,000. | | CF Tommy Shaffer received a 1-year contract through arbitration worth a total of $750,000. | | CF Héctor Ramírez received a 1-year contract through arbitration worth a total of $6,036,250. |
| Wednesday, November 7th, 2012 | | Signed RF Pat Day to a 2-year contract extension worth a total of $2,720,000. |
| Tuesday, November 6th, 2012 | | Signed hitting coach Ken Boyd to a 3-year, $150,000 per year contract. |
| Monday, November 5th, 2012 | | Signed pitching coach Víctor Guerro to a 3-year, $160,000 per year contract. |
| Sunday, October 28th, 2012 | | Pitching Coach António Pacheco leaves the team, his contract was not renewed. | | Hitting Coach Soetsu Yamashita leaves the team, his contract was not renewed. |
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