(CBS) The White Sox made changes to their major league coaching staff Tuesday, promoting Daryl Boston and Bobby Thigpen while moving Harold Baines to a new position.

Boston will now serve as first base coach for the White Sox, while Baines moves to a newly created position as assistant hitting coach. Thigpen replaces Juan Nieves as bullpen coach. Nieves was hired by the Red Sox to be their pitching coach.

Boston, 49, has been the White Sox’s minor-league outfield coordinator for the last 12 seasons. Before that, he was a hitting coach in the White Sox minor league system.

Thigpen, 49, has served as a pitching coach in the system for the last four seasons. Last year he was with Double-A Birmingham after three years with Single-A Winston-Salem. Thigpen, of course, was a former White Sox closer, holding the franchise record for saves with 201.

Baines, 54, was the first base coach for the White Sox for the last seven seasons. He also served as bench coach in 2004 and 2005. He’ll now assist hitting coach Jeff Manto.

The rest of the coaching staff remains in tact with Don Cooper (pitching), Joe McEwing (third base), Mark Parent (bench) and Mark Salas (bullpen catcher) all returning.

Watch & Listen LIVE