TORONTO -- Chicago White Sox pitching coach Don Cooper will rejoin the club on Friday when the White Sox open a 10-game homestand at U.S. Cellular Field. Cooper was hospitalized on April 9 with a bout of diverticulitis and has been in Chicago receiving further tests since Saturday.
Bobby Thigpen has filled in for Cooper as pitching coach during his absence while bullpen catcher Mark Salas has temporarily taken over Thigpen's usual role as bullpen coach.
Cooper, 56, has been the White Sox pitching coach since July 2002. He briefly served as the team's manager during the final two games of the 2011 season after Ozzie Guillen left for the Florida Marlins.