| | | Monday, December 23rd, 2013 | | Signed Yoshiki Sasaki to a minor league contract with a signing bonus of $140,000. |
| Saturday, December 21st, 2013 | | Signed Toshiki Takaki to a minor league contract with a signing bonus of $120,000. |
| Wednesday, December 11th, 2013 | | Placed MR Pedro López on the active roster. | | Placed MR Charles O'Connor on the 14-day disabled list, retroactive to 09/02/2013. |
| Sunday, December 8th, 2013 | | Signed free agent MR Pedro López to a 3-year contract worth a total of $9,200,000. |
| Wednesday, December 4th, 2013 | | Signed free agent MR Charles O'Connor to a 4-year contract worth a total of $38,950,000. |
| Saturday, November 30th, 2013 | | Placed SP Jeff Olsen on the active roster. | | Activated SP Jeff Olsen from the 60-day disabled list. | | Placed SP Jeff Olsen on the 60-day disabled list. |
| Saturday, November 23rd, 2013 | | Purchased the contract of SP Derrick Scott from Triple A Reno. |
| Thursday, November 21st, 2013 | | MR Ray Brady received a 1-year contract through automatic renewal worth a total of $500,000. | | 2B José Ortíz received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Rich Barrett received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Ryan Owens received a 1-year contract through automatic renewal worth a total of $500,000. | | SS Nicolá Giancana received a 1-year contract through automatic renewal worth a total of $500,000. | | 3B Lou Gibson received a 1-year contract through automatic renewal worth a total of $500,000. | | 2B Alonso Núñes received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Christian Clark received a 1-year contract through automatic renewal worth a total of $500,000. | | C James Kernaghan received a 1-year contract through automatic renewal worth a total of $500,000. | | C Phillip Smith received a 1-year contract through automatic renewal worth a total of $510,000. | | 1B Ray Stevens becomes a free-agent. | | CF James Davis received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Octávio Márquez received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Ernie Kuhn received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Jeff Olsen received a 1-year contract through automatic renewal worth a total of $500,000. | | CF Dave Lewis received a 1-year contract through automatic renewal worth a total of $500,000. | | RF Carlos Ruíz received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Nick Fox received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Bob Magee received a 1-year contract through automatic renewal worth a total of $500,000. |
| Monday, November 18th, 2013 | | SS Erik Bennett received a 1-year contract through arbitration worth a total of $1,150,000. | | MR Francisco García becomes a free-agent. |
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