D'backs let former Giants star go from coaching staff

SCOTTSDALE, Ariz. -- Two of the Diamondbacks' best-known former players will not be retained on the team's coaching staff under new manager Torey Lovullo.

Arizona general manager Mike Hazen confirmed Tuesday that third base coach Matt Williams and assistant hitting coach Mark Grace will not return.

Williams was the third baseman and Grace the first baseman on the Diamondbacks' 2001 World Series championship team.

"They were difficult decisions that we felt we had to make," Hazen said. "Any new manager coming in there's chances there will be those changes."

Hazen was assistant general manager of the Boston Red Sox before he was hired by the Diamondbacks three weeks ago to replace the fired Dave…