Omar Vizquel is not primarily associated with the Seattle Mariners, but the player who would become one of the best defensive infielders ever would begin his career in the Pacific Northwest.
After four years in the Majors, Brice Bochte would sign with the Seattle Mariners as a Free Agent and went on to have the best run of his career.
Franklin Gutierrez was not a superstar in the Majors, but his best years by far were his time in Seattle.