PHOENIX (AP) - Former Carson High slugger Matt Williams is joining the Arizona Diamondbacks as first base coach.
A five-time All-Star third baseman, the 43-year-old Williams will make his big league coaching debut. He played for the club from 1998-2003 and recently completed his fifth season as a team broadcaster.
Bo Porter will also join manager A.J. Hinch's staff, as third base coach. Porter spent parts of three seasons with the Chicago Cubs, Oakland Athletics and Texas Rangers.
The Diamondbacks also said that Glenn Sherlock, who has been on the staff since the team's inception in 1998, will return as the bullpen and catching coach.