SEATTLE -- The Seattle Mariners designated backup catcher John Buck for assignment following Monday night's game against the Minnesota Twins.
The Mariners will make a corresponding move on Tuesday.
Buck, 34, signed a one-year contract with Seattle in the off-season. He was hitting .226 with one home run and six RBIs in 27 games.
He hit 63 homers over the last four seasons, fifth-most among catchers. He also played for Miami, Toronto, Kansas City, the New York Mets and Pittsburgh.