| | | Sunday, December 29th, 2013 | | Signed 3rd round draft pick Tsukasa Yamanoue for a signing bonus of $2,500,000 and a 1-year major league contract worth a total of $510,000. |
| Monday, December 23rd, 2013 | | Signed free agent SS Juan López to a minor league contract. |
| Sunday, December 22nd, 2013 | | Signed 4th round draft pick Seinosuke Yokota for a signing bonus of $1,320,000 and a 1-year major league contract worth a total of $750,000. | | Signed Katsunan Mitzusaka to a minor league contract with a signing bonus of $200,000. |
| Thursday, December 19th, 2013 | | Signed Scouting Director Richard Jones to a 5-year contract extension. | | Signed Steve Ellis to a minor league contract with a signing bonus of $500,000. |
| Tuesday, December 17th, 2013 | | Drafted SP Robert Osborne in the 2013 first-year player draft (Round 1, Pick 3, 3rd overall pick). | | Drafted C Steve Ellis in the 2013 first-year player draft (Round 2, Pick 3, 28th overall pick). | | Drafted SP Tsukasa Yamanoue in the 2013 first-year player draft (Round 3, Pick 3, 52nd overall pick). | | Drafted SP Seinosuke Yokota in the 2013 first-year player draft (Round 4, Pick 3, 76th overall pick). | | Drafted CF Katsunan Mitzusaka in the 2013 first-year player draft (Round 5, Pick 3, 100th overall pick). | | Drafted SP Ernesto Díaz in the 2013 first-year player draft (Round 6, Pick 3, 124th overall pick). | | Drafted CF William Stafford in the 2013 first-year player draft (Round 7, Pick 3, 148th overall pick). | | Drafted 3B José Salazar in the 2013 first-year player draft (Round 8, Pick 3, 172nd overall pick). | | Drafted LF Masakado Kichida in the 2013 first-year player draft (Round 9, Pick 3, 196th overall pick). | | Drafted SP Kazuhiro Taguchi in the 2013 first-year player draft (Round 10, Pick 3, 220th overall pick). | | Drafted C Cecil Mauldin in the 2013 first-year player draft (Round 11, Pick 3, 244th overall pick). | | Drafted 2B Ed Kennedy in the 2013 first-year player draft (Round 12, Pick 3, 268th overall pick). |
| Sunday, December 1st, 2013 | | 3B Fernando Ramírez was designated for assignment and placed on waivers. | | SS Craig Henderson was designated for assignment and placed on waivers. | | Placed 2B Jacob Pitcock on the 40-man roster. | | SP Brian Hudson was designated for assignment and placed on waivers. | | SS John House was designated for assignment and placed on waivers. | | 2B Marvin Welch was designated for assignment and placed on waivers. | | 3B Valentín Cabrera was designated for assignment and placed on waivers. | | Drafted SP Bob Smith in the 2013 Rule 5 Draft (Round 1, Pick 3, 3rd overall Pick), from the Eureka Hornets. |
| Thursday, November 21st, 2013 | | RF Tom Klein received a 1-year contract through automatic renewal worth a total of $6,000,000. | | MR Héctor Figueroa received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Austin McCabe received a 1-year contract through automatic renewal worth a total of $500,000. | | RF Bill Watson received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Eric Yates received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Dennis Inman received a 1-year contract through automatic renewal worth a total of $510,000. | | 3B Fernando Ramírez received a 1-year contract through automatic renewal worth a total of $510,000. | | LF Luis Santos received a 1-year contract through automatic renewal worth a total of $500,000. | | 1B Alek Afendulov received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Lou Watts received a 1-year contract through automatic renewal worth a total of $510,000. | | 3B Timothy Watson received a 1-year contract through automatic renewal worth a total of $500,000. | | 3B Stanton Poole received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Michael Walters becomes a free-agent. | | MR Marcos Rodríguez becomes a free-agent. | | RF William Kirby becomes a free-agent. | | LF Kurt Swaffer becomes a free-agent. | | C Ricardo Pelayo becomes a free-agent. |
| Monday, November 18th, 2013 | | CL Ramón Rivera received a 1-year contract through arbitration worth a total of $3,243,500. | | SP Brian O'Keggan received a 1-year contract through arbitration worth a total of $787,500. | | SP Charles Bailey received a 1-year contract through arbitration worth a total of $750,000. | | SP Roger Dawson received a 1-year contract through arbitration worth a total of $1,028,500. | | SP Pete Barrett received a 1-year contract through arbitration worth a total of $1,210,000. | | MR Al Burton received a 1-year contract through arbitration worth a total of $750,000. | | LF Bryan Lewis received a 1-year contract through arbitration worth a total of $750,000. |
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