| | | Friday, December 27th, 2013 | | Signed Keitaro Suzuki to a minor league contract with a signing bonus of $200,000. |
| Thursday, December 26th, 2013 | | Signed free agent MR Bill Wells to a 1-year contract worth a total of $1,200,000. | | Signed free agent MR Simon Rigney to a 1-year contract worth a total of $950,000. |
| Monday, December 23rd, 2013 | | Signed free agent MR José Contreras to a minor league contract. |
| Thursday, December 19th, 2013 | | Signed free agent MR David Burns to a 1-year contract worth a total of $800,000. |
| Wednesday, December 18th, 2013 | | Signed Reijiro Yamaguchi to a minor league contract with a signing bonus of $4,980,000. |
| Tuesday, December 17th, 2013 | | Drafted SP Reijiro Yamaguchi in the 2013 first-year player draft (Round 1, Pick 11, 11th overall pick). | | Drafted CL Jon Schneider in the 2013 first-year player draft (Round 2, Pick 11, 36th overall pick). | | Drafted CL Joe Wilkins in the 2013 first-year player draft (Round 3, Pick 11, 60th overall pick). | | Drafted CF Wilbur Jackson in the 2013 first-year player draft (Round 4, Pick 11, 84th overall pick). | | Drafted CF Keitaro Suzuki in the 2013 first-year player draft (Round 5, Pick 11, 108th overall pick). | | Drafted CF Don Bruton in the 2013 first-year player draft (Round 6, Pick 11, 132nd overall pick). | | Drafted SS Tsukasa Otsuka in the 2013 first-year player draft (Round 7, Pick 11, 156th overall pick). | | Drafted CF Julián Garza in the 2013 first-year player draft (Round 8, Pick 11, 180th overall pick). | | Drafted 3B Jimmy Barton in the 2013 first-year player draft (Round 9, Pick 11, 204th overall pick). | | Drafted SP Héctor León in the 2013 first-year player draft (Round 10, Pick 11, 228th overall pick). | | Drafted RF Noël Mathieu in the 2013 first-year player draft (Round 11, Pick 11, 252nd overall pick). | | Drafted 3B John Roberts in the 2013 first-year player draft (Round 12, Pick 11, 276th overall pick). |
| Thursday, November 21st, 2013 | | SS Curt Dempsey received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Andy Reynolds received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Melvin Brown received a 1-year contract through automatic renewal worth a total of $510,000. | | CF Ryan Taylor received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Henry Bell received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Robert Williams received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Charles O'Connor becomes a free-agent. | | MR Bob Hendricks received a 1-year contract through automatic renewal worth a total of $500,000. | | 1B Ted Nichols becomes a free-agent. | | MR Ben Jones becomes a free-agent. | | SP Ricardo Medine becomes a free-agent. | | C Steve McCoy becomes a free-agent. | | LF Martin Boatwright becomes a free-agent. |
| Friday, November 1st, 2013 | | Signed SP Troy Baker to a 3-year contract extension worth a total of $12,150,000. |
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