| | | Monday, December 30th, 2013 | | Signed SP Kevin Sampson to a 4-year contract extension worth a total of $5,680,000. |
| Tuesday, December 24th, 2013 | | Signed SP Dawson Chase to a minor league contract extension. |
| Sunday, December 22nd, 2013 | | Signed SP Malcolm McKinney to a minor league contract extension. |
| Saturday, December 21st, 2013 | | Signed MR Marvin White to a 2-year contract extension worth a total of $1,700,000. |
| Tuesday, December 17th, 2013 | | Drafted SP Lance Harmon in the 2013 first-year player draft (Round 1, Pick 5, 5th overall pick). | | Drafted SP Nobuhisa Yamashita in the 2013 first-year player draft (Round 2, Pick 5, 30th overall pick). | | Drafted 2B Juan Valdés in the 2013 first-year player draft (Round 3, Pick 5, 54th overall pick). | | Drafted MR Sergio Trejo in the 2013 first-year player draft (Round 4, Pick 5, 78th overall pick). | | Drafted RF Alberto Gonzáles in the 2013 first-year player draft (Round 5, Pick 5, 102nd overall pick). | | Drafted CL Bryan Miron in the 2013 first-year player draft (Round 6, Pick 5, 126th overall pick). | | Drafted SS Christian Keller in the 2013 first-year player draft (Round 7, Pick 5, 150th overall pick). | | Drafted MR Taizo Morita in the 2013 first-year player draft (Round 8, Pick 5, 174th overall pick). | | Drafted SP Yoshino Yamaguchi in the 2013 first-year player draft (Round 9, Pick 5, 198th overall pick). | | Drafted SS Joe Smith in the 2013 first-year player draft (Round 10, Pick 5, 222nd overall pick). | | Drafted SP Kuemon Hakui in the 2013 first-year player draft (Round 11, Pick 5, 246th overall pick). | | Drafted 1B Hiroji Ogawa in the 2013 first-year player draft (Round 12, Pick 5, 270th overall pick). |
| Thursday, December 5th, 2013 | | Signed 1B Patrick Goff to a 3-year contract extension worth a total of $18,000,000. |
| Thursday, November 21st, 2013 | | LF Luis Castro received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Dustin Chapman received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Bill Parker received a 1-year contract through automatic renewal worth a total of $510,000. | | CL Terry Stafford received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Kevin Sampson received a 1-year contract through automatic renewal worth a total of $510,000. | | LF John Woodard received a 1-year contract through automatic renewal worth a total of $510,000. | | RF Stan Cheslin received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Jorge Mendoza received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Jon Andrews received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Ricky Smith received a 1-year contract through automatic renewal worth a total of $510,000. | | MR Dorian Cox received a 1-year contract through automatic renewal worth a total of $500,000. | | C Allen Larsen received a 1-year contract through automatic renewal worth a total of $510,000. | | 3B Jack Johnson received a 1-year contract through automatic renewal worth a total of $500,000. | | RF Ed Shannon received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Jason Bryan received a 1-year contract through automatic renewal worth a total of $500,000. | | SP William Gordon becomes a free-agent. | | MR John Chambers becomes a free-agent. | | CL Mark Fults becomes a free-agent. | | SP Harry King becomes a free-agent. |
| Monday, November 18th, 2013 | | 3B Roger Bell becomes a free-agent. |
| Friday, November 1st, 2013 | | Signed SP Dawson Chase to a minor league contract extension. |
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