Cooper played for the Twins in 1981 and 1982, before being traded to the Toronto Blue Jays for Dave Baker on December 10, 1982.[5] On March 13, 1984, Cooper was traded to the Yankees for outfielder Derwin McNealy.[6]
Cooper signed with the Oakland Athletics for the 1986 season, appearing only in the minor leagues. In 44 MLB games (three starts) spread over four seasons, Cooper compiled a 1–6 record with a 5.27 ERA.[5]
Coaching career
Cooper had worked in the White Sox organization since 1988, when he served as a minor league pitching coach for the Single-A South Bend Silver Hawks. He also served as pitching coach for the Single-A Advanced Sarasota White Sox from 1989 through 1991 and the Double-A Birmingham Barons in 1992. He became the White Sox minor league pitching coordinator from 1993 through 2002, aside from serving as pitching coach for the Triple-ANashville Sounds in 1995 and 1996.
Cooper became the White Sox pitching coach in July 2002, replacing Nardi Contreras.[1][7] With the departure of Ozzie Guillén on September 26, 2011, and Joey Cora on September 27, 2011, Cooper became the 38th manager of the White Sox, filling the role for the final two games of the 2011 season before yielding the position to Robin Ventura.[8]
Cooper was one of the longest tenured pitching coaches in MLB. He told the Chicago Sun-Times in 2018, "I love being part of young people’s lives helping them achieve the dreams they’re dreaming about. That’s what I’m into.’’[9]