(San Francisco, CA)  --  Mike Yastrzemski hit a go-ahead grand slam as the Giants beat the Diamondbacks 9-8 at home.  The right fielder emptied the bases with a home run in the eighth to give San Francisco its first lead of the game.  The Giants trailed by seven in the second inning.  Jimmie Sherfy earned his first of the year.  Tyler Rogers shut down the ninth for his ninth save.  San Francisco handed Arizona its 21st straight road loss, one short of the MLB record.  The Giants continue the series tonight.