Castillo played in ten MLB seasons spanning 1988–1998, pitching in 403 games, 218 of them with the Blue Jays. Castillo posted an overall record of 28–23 with a 3.93 ERA and 22 saves, striking out 333 batters while walking 179 in innings of work. Castillo played in four career playoff games, all with Toronto in 1993, posting a 1–0 record with a 5.06 ERA, and helping the Jays win the 1993 World Series.
