Mariners Roster & Staff

Date Transaction
2/7/18 Seattle Mariners signed free agent SS Osiris Castillo to a minor league contract.
2/14/18 Seattle Mariners signed free agent OF Yeral Casilla to a minor league contract.
2/14/18 Seattle Mariners signed free agent CF Arturo Guerrero to a minor league contract.
2/16/18 Seattle Mariners signed free agent OF Junior Lake to a minor league contract.