| | | Saturday, September 26th, 2015 | | Placed CF Ted Long on the 15-day disabled list. |
| Thursday, July 2nd, 2015 | | Signed Bubba Reid to a minor league contract with a signing bonus of $6,000,000. |
| Monday, June 22nd, 2015 | | Signed Jeff Mason to a minor league contract with a signing bonus of $500,000. |
| Sunday, June 21st, 2015 | | Signed Javier Serrano to a minor league contract with a signing bonus of $250,000. |
| Tuesday, May 26th, 2015 | | Purchased the contract of MR Matt Hines from Triple A Norfolk. |
| Tuesday, May 12th, 2015 | | Placed SP Ramón Ortíz on the 60-day disabled list. |
| Monday, March 23rd, 2015 | | Placed CF Ted Long on the 15-day disabled list. |
| Saturday, January 31st, 2015 | | Signed free agent CL Júlio Muńóz to a 4-year contract worth a total of $17,850,000. | | Signed free agent CL Kyuso Murakami to a 3-year contract worth a total of $8,460,000. |
| Friday, January 30th, 2015 | | Signed free agent MR Shunsuke Saikawa to a 1-year contract worth a total of $400,000. |
| Saturday, January 10th, 2015 | | Signed free agent LF Anastasio Gutiérrez to a 4-year contract worth a total of $85,080,000. |
| Monday, December 8th, 2014 | | C Jesús Silva was designated for assignment and placed on waivers. | | MR Egiodeo Pisanello was designated for assignment and placed on waivers. |
| Tuesday, November 18th, 2014 | | MR Geoff Banks becomes a free-agent. | | 3B Morgan Bowman received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Dale Hicks received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Jeremy Manning received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Ted Long received a 1-year contract through automatic renewal worth a total of $400,000. | | C Jai-guo Sima received a 1-year contract through automatic renewal worth a total of $400,000. | | LF Ron Niles received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Chase Taylor received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Luigino Cortesini received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Edwin Molyneaux received a 1-year contract through automatic renewal worth a total of $400,000. | | SS Félix Fuentes received a 1-year contract through automatic renewal worth a total of $400,000. | | 2B Bill Johnson received a 1-year contract through automatic renewal worth a total of $400,000. | | RF Vicente Morales becomes a free-agent. | | 1B Francisco Escalante received a 1-year contract through automatic renewal worth a total of $400,000. | | CL Naoki Jouda received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Matt Chase received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Dan O'Leary received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Petro Wiersma received a 1-year contract through automatic renewal worth a total of $600,000. | | SS Ezechiele Sturzo received a 1-year contract through automatic renewal worth a total of $400,000. | | Placed SP Ramón Ortíz on the active roster. | | Activated SP Ramón Ortíz from the 60-day disabled list. |
| Saturday, November 15th, 2014 | | SS Abraăo Palhinha received a 1-year contract through arbitration worth a total of $600,000. | | SP Austin Dunn received a 1-year contract through arbitration worth a total of $2,643,500. | | SP Phil Greene becomes a free-agent. | | MR Nicholas Long received a 1-year contract through arbitration worth a total of $1,000,000. | | SP Dan Taylor received a 1-year contract through arbitration worth a total of $640,000. | | SP Ramón Ortíz received a 1-year contract through arbitration worth a total of $2,800,000. | | C Jesús Silva received a 1-year contract through arbitration worth a total of $600,000. | | MR Ki-hoon Chon becomes a free-agent. |
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