Rays Roster & Staff
Transactions
| Date | Transaction |
| 01/31/18 | Tampa Bay Rays signed free agent C Xorge Carrillo to a minor league contract and invited him to spring training. |
| 01/26/18 | Tampa Bay Rays signed free agent RHP Ryan Weber to a minor league contract and invited him to spring training. |
| 01/26/18 | Tampa Bay Rays signed free agent RHP Jose Cerda to a minor league contract. |
| 01/24/18 | Tampa Bay Rays signed free agent C Johnny Monell to a minor league contract and invited him to spring training. |
| 01/22/18 | Tampa Bay Rays signed free agent RHP Yosmer Curbata to a minor league contract. |
| 01/22/18 | Tampa Bay Rays signed free agent RHP Endry Manrique to a minor league contract. |
| 01/10/18 | Tampa Bay Rays signed free agent RHP Forrest Snow to a minor league contract and invited him to spring training. |