Mariners Roster & Staff
Transactions
| Date | Transaction |
| 02/24/15 | Texas Rangers claimed Edgar Olmos off waivers from Seattle Mariners. |
| 02/20/15 | Seattle Mariners signed free agent LHP Joe Saunders to a minor league contract and invited him to spring training. |
| 02/13/15 | Seattle Mariners signed free agent LF Rickie Weeks. |
| 02/13/15 | Seattle Mariners designated LHP Edgar Olmos for assignment. |
| 02/12/15 | Seattle Mariners signed free agent LHP Rafael Perez to a minor league contract and invited him to spring training. |