| | | Friday, December 27th, 2013 | | Signed Bernardo Cisneros to a minor league contract with a signing bonus of $1,000,000. |
| Thursday, December 26th, 2013 | | Signed Bryan Mifflen to a minor league contract with a signing bonus of $120,000. |
| Saturday, December 21st, 2013 | | Signed Millard Joseph to a minor league contract with a signing bonus of $230,000. |
| Tuesday, December 17th, 2013 | | Drafted SP Aaron Harris in the 2013 first-year player draft (Round 1, Pick 4, 4th overall pick). | | Drafted CF Bernardo Cisneros in the 2013 first-year player draft (Round 2, Pick 4, 29th overall pick). | | Drafted SP Millard Joseph in the 2013 first-year player draft (Round 3, Pick 4, 53rd overall pick). | | Drafted 2B Katsumoto Matsui in the 2013 first-year player draft (Round 4, Pick 4, 77th overall pick). | | Drafted CL Bryan Mifflen in the 2013 first-year player draft (Round 5, Pick 4, 101st overall pick). | | Drafted CL Jim King in the 2013 first-year player draft (Round 6, Pick 4, 125th overall pick). | | Drafted CF Leland Ray in the 2013 first-year player draft (Round 7, Pick 4, 149th overall pick). | | Drafted 1B Brett Caines in the 2013 first-year player draft (Round 8, Pick 4, 173rd overall pick). | | Drafted C Morgan Cairns in the 2013 first-year player draft (Round 9, Pick 4, 197th overall pick). | | Drafted MR Pancho Ochoa in the 2013 first-year player draft (Round 10, Pick 4, 221st overall pick). | | Drafted SP Tom Smith in the 2013 first-year player draft (Round 11, Pick 4, 245th overall pick). | | Drafted SP Wei-quo Xian in the 2013 first-year player draft (Round 12, Pick 4, 269th overall pick). |
| Saturday, November 23rd, 2013 | | Placed LF Drew Patterson on the 40-man roster. | | Placed MR Bobby Bennett on the 40-man roster. | | CF Matt Brown was designated for assignment and placed on waivers. | | MR Dorian Dubreuil was designated for assignment and placed on waivers. |
| Thursday, November 21st, 2013 | | MR Joseph Williams received a 1-year contract through automatic renewal worth a total of $510,000. | | CL Kevin Rutledge received a 1-year contract through automatic renewal worth a total of $500,000. | | LF Robert O'Neil received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Johnny Ratzlaff received a 1-year contract through automatic renewal worth a total of $510,000. | | SP John Martin received a 1-year contract through automatic renewal worth a total of $500,000. | | 1B Fernando Guzmán received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Aaron Nelson received a 1-year contract through automatic renewal worth a total of $510,000. | | RF Francisco Alfonso becomes a free-agent. | | SS Ángelo Casas received a 1-year contract through automatic renewal worth a total of $500,000. | | SP Cecil Gibbons received a 1-year contract through automatic renewal worth a total of $510,000. | | MR John Ward received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Glen Slaughter received a 1-year contract through automatic renewal worth a total of $510,000. |
| Monday, November 18th, 2013 | | C Carlos Martínez becomes a free-agent. | | LF Kirby Andrews received a 1-year contract through arbitration worth a total of $750,000. | | SP Víctor Enríquez received a 1-year contract through arbitration worth a total of $975,000. | | RF Brad Quinn becomes a free-agent. |
| Monday, November 4th, 2013 | | Signed C Jayson O'Neill to a 7-year contract extension worth a total of $7,000,000. |
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