Frank Anthony Castillo (April 1, 1969 – July 28, 2013) was an American Major League Baseball starting pitcher. Castillo played for the Chicago Cubs (1991–1997), Colorado Rockies (1997), Detroit Tigers (1998), Toronto Blue Jays (2000), Boston Red Sox (2001–2002, 2004), and Florida Marlins (2005).A sixth round pick by the Cubs in the 1987 amateur draft, Castillo made his major league debut in 1991.On September 25, 1995, in a 7–0 shutout victory over the St.