Michael Conforto and Mike Yastrzemski hit two-run homers off Devin Smeltzer in the 11th inning, lifting the San Francisco Giants over the Miami Marlins 5-2 to stop a five-game losing streak. San Francisco didn’t have a hit after the fourth inning until Conforto, who pinch hit in the eighth, broke a 1-1 tie when he drove a hanging curveball from Smeltzer over the wall in right center for his fourth homer. Yastrzemski homered on an up slider, his first home run this year off a left-hander, for a 5-1 lead.