| | | Thursday, October 1st, 2015 | | Signed 2B Soetsu Watanabe to a 3-year contract extension worth a total of $4,036,500. |
| Sunday, September 13th, 2015 | | Signed C Jin-young Om to a 3-year contract extension worth a total of $2,691,000. |
| Sunday, July 26th, 2015 | | Signed free agent C Jin-young Om to a 1-year contract worth a total of $780,000. | | Signed free agent 1B Jorge Acosta to a 1-year contract worth a total of $1,170,000. | | Signed free agent C Joe Williams to a 1-year contract worth a total of $800,000. | | Signed free agent RF Vicente Morales to a 1-year contract worth a total of $1,550,000. |
| Wednesday, July 1st, 2015 | | Signed Shirai Yamamoto to a minor league contract with a signing bonus of $4,920,000. |
| Tuesday, June 30th, 2015 | | Signed Cristián García to a minor league contract with a signing bonus of $380,000. |
| Saturday, June 27th, 2015 | | Signed Reginald Gilly to a minor league contract with a signing bonus of $1,500,000. |
| Friday, June 26th, 2015 | | Signed Joe Williams to a minor league contract with a signing bonus of $260,000. |
| Sunday, June 21st, 2015 | | Signed Ryan Yoder to a minor league contract with a signing bonus of $810,000. |
| Monday, June 15th, 2015 | | Placed LF Roberto Rincón on the 60-day disabled list. |
| Monday, March 16th, 2015 | | Placed 2B Fred Billings on the 15-day disabled list. |
| Monday, January 5th, 2015 | | Placed 1B Jorge Acosta on waivers. |
| Thursday, December 11th, 2014 | | Signed free agent MR Mark Antle to a 1-year contract worth a total of $710,000. | | Signed free agent 3B Jim Womack to a 1-year contract worth a total of $960,000. |
| Friday, December 5th, 2014 | | Signed free agent CF Julius McQueen to a 3-year contract worth a total of $11,370,000. |
| Thursday, December 4th, 2014 | | Signed free agent 2B Soetsu Watanabe to a 1-year contract worth a total of $1,170,000. |
| Tuesday, November 25th, 2014 | | Signed free agent 2B Phil Brown to a 1-year contract worth a total of $790,000. | | Placed 2B Phil Brown on the active roster. |
| Tuesday, November 18th, 2014 | | MR Ha-ro Sin received a 1-year contract through automatic renewal worth a total of $400,000. | | RF David Santana becomes a free-agent. | | SP Adam Hurley received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Norberto Gaona received a 1-year contract through automatic renewal worth a total of $400,000. | | C Conan Park received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Jack Jones received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Pablo Pérez received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Jimmy Gorman received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Arnoldo Ramos received a 1-year contract through automatic renewal worth a total of $400,000. | | MR John Dawson becomes a free-agent. | | CF Kevin Riopel received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Roberto Rincón received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Won-sik Chon received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Chad Gordon received a 1-year contract through automatic renewal worth a total of $400,000. | | C Gabriel Bruno becomes a free-agent. | | 1B Harry Howard received a 1-year contract through automatic renewal worth a total of $400,000. | | Placed 2B Fred Billings on the active roster. | | Activated 2B Fred Billings from the disabled list. | | Placed RF Tony Dann on the active roster. | | Activated RF Tony Dann from the disabled list. | | Purchased the contract of MR Jorge Durango from Triple A Cincinnati. |
| Saturday, November 15th, 2014 | | MR John Byrne received a 1-year contract through arbitration worth a total of $970,000. | | MR Jack Brooks received a 1-year contract through arbitration worth a total of $610,000. | | C José Rodríguez received a 1-year contract through arbitration worth a total of $1,230,000. | | 2B Fred Billings received a 1-year contract through arbitration worth a total of $600,000. | | RF Tony Dann received a 1-year contract through arbitration worth a total of $600,000. | | SP Juan Vallés received a 1-year contract through arbitration worth a total of $5,000,000. | | SP George Hartman received a 1-year contract through arbitration worth a total of $1,700,000. |
| Friday, October 31st, 2014 | | Signed LF Larry Jones to a 4-year contract extension worth a total of $49,818,000. |
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