Hunter Renfroe's go-ahead, two-run homer in the seventh inning Saturday night gave the host San Diego Padres a 5-4 victory over the San Francisco Giants at Petco Park. With San Francisco up 4-3, San Diego's Freddy Galvis led off the seventh with a single off Giants reliever Cory Gearrin (0-1). Renfroe followed with a home run to left.