| January 11, 2019 | Agreed to terms with LHPs Matthew Boyd, Blaine Hardy, Daniel Norris and OF Nicholas Castellanos on one-year contracts. |
| January 10, 2019 | Agreed to terms with RHP Shane Greene on a one-year contract. |
| January 7, 2019 | Named P.J. Jones, John Stockstill and Josh Wilson major league scouts; Joey Lothrop, Steve Taylor and Matt Zmuda area scouts; Josh Kragness senior software engineer; Beau Horan, Aidan Kearns and Zach Wolf analysts; Rafael Martinez director of Latin American player development; and David Allende and Jim McKew coordinators of player development. Promoted Jim Logue to director of baseball analytics; Drew Jordan, Maggie O'Hara, Shane Piesik and Danny Vargovick to senior analysts; Wilfredo Crespo and Jimmy Ortiz to administrators of the Dominican Academy; and Justin Henry and Dave Lottsfeldt to regional crosscheckers. |
