At age 31 , he signed a one - year contract with the Seattle Mariners for their second season as an American League expansion team in 1978 .
After his release from the Reds , Plummer 's playing career wound down quickly .
At age 31 , Plummer signed a one - year contract with the Seattle Mariners for their second season as an American League expansion team in 1978 .
After his release from the Reds , Plummer 's playing career wound down quickly .