Gorkys Hernandez led off the top of the 12th inning with his 13th homer of the season Monday night, leading the San Francisco Giants a 5-3 victory over the Padres in San Diego. Hernandez connected on a 1-2 pitch from left-handed reliever Matt Strahm (2-3) on his 398-foot drive into the left field stands. The Giants added a second run in the 12th on singles by Kelby Tomlinson and Andrew McCutchen and a Buster Posey blooper that landed in left but resulted in a force of McCutchen at second.