| | | Monday, October 21st, 2013 | | Placed 2B Gary McLernon on the 14-day disabled list, retroactive to 10/16/2013. | | Purchased the contract of 1B Júlio Sánchez from Triple A Pasadena. |
| Tuesday, August 20th, 2013 | | Signed SP Jeff Williams to a 2-year contract extension worth a total of $6,000,000. |
| Friday, July 19th, 2013 | | Placed 2B Gary McLernon on the 14-day disabled list, retroactive to 07/13/2013. | | Purchased the contract of 1B Júlio Sánchez from Triple A Pasadena. |
| Monday, June 24th, 2013 | | Placed 2B Tonito Almonte on the 14-day disabled list, retroactive to 06/23/2013. |
| Monday, May 6th, 2013 | | Placed MR Nick Hawkins on the 14-day disabled list, retroactive to 04/30/2013. | | Purchased the contract of SP Jimmy White from Triple A Pasadena. |
| Saturday, March 23rd, 2013 | | Placed SP Jeff Williams on the 60-day disabled list. |
| Saturday, January 26th, 2013 | | 2B Tonito Almonte was designated for assignment and placed on waivers. | | Placed LF Claude Knight on the active roster. |
| Friday, January 18th, 2013 | | Signed Juan Lejeune to a minor league contract with a signing bonus of $175,000. |
| Tuesday, January 15th, 2013 | | 2B Sylvain Champion was claimed off waivers by Cabo San Lucas. | | Signed 2nd round draft pick Seitaro Uenohara for a signing bonus of $450,000 and a 4-year major league contract worth a total of $2,400,000. |
| Saturday, December 29th, 2012 | | Placed LF Claude Knight on waivers. | | Placed SP Francis Baker on the 14-day disabled list, retroactive to 05/07/2012. | | Placed SP Jerome Burnett on the 14-day disabled list, retroactive to 05/23/2012. | | Placed 3B Michael Brown on the 14-day disabled list, retroactive to 07/24/2012. | | Placed RF Orlando Carranzo on the 14-day disabled list, retroactive to 05/22/2012. | | LF Claude Knight was designated for assignment and placed on waivers. | | Placed C Pancho Álvarez on the active roster. |
| Thursday, December 20th, 2012 | | Signed free agent MR Brad Austin to a 4-year contract worth a total of $40,000,000. |
| Tuesday, December 18th, 2012 | | Signed free agent MR Jim Dorsey to a 4-year contract worth a total of $38,000,000. |
| Tuesday, December 11th, 2012 | | Placed 2B Tonito Almonte on the active roster. |
| Wednesday, December 5th, 2012 | | Signed C Ronnie Wells to a 4-year contract extension worth a total of $28,480,000. |
| Friday, November 30th, 2012 | | Placed C Pancho Álvarez on the active roster. |
| Friday, November 23rd, 2012 | | SP Chris Johnson was designated for assignment and placed on waivers. |
| Wednesday, November 21st, 2012 | | RF Mike Bergeron received a 1-year contract through automatic renewal worth a total of $6,000,000. | | 3B Michael Brown received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Mike Miller received a 1-year contract through automatic renewal worth a total of $500,000. | | RF Orlando Carranzo received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Jerome Burnett received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Ambrosio Cuco received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Jesús González received a 1-year contract through automatic renewal worth a total of $510,000. | | SP William Nolan received a 1-year contract through automatic renewal worth a total of $500,000. | | SS Dylan Foster received a 1-year contract through automatic renewal worth a total of $510,000. | | 1B Joe Sharpe received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Royce Butterfield received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Francis Baker received a 1-year contract through automatic renewal worth a total of $510,000. | | C David Rivera received a 1-year contract through automatic renewal worth a total of $510,000. | | LF Andrew Padgett received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Paul Green received a 1-year contract through automatic renewal worth a total of $500,000. | | MR José López received a 1-year contract through automatic renewal worth a total of $500,000. | | SS John House received a 1-year contract through automatic renewal worth a total of $510,000. |
| Sunday, November 18th, 2012 | | MR Wesley Oliver received a 1-year contract through arbitration worth a total of $935,000. | | SP Chris Johnson received a 1-year contract through arbitration worth a total of $1,320,000. |
| Monday, November 12th, 2012 | | Placed SP Jerome Burnett on the 60-day disabled list. |
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