Buster Posey greeted Los Angeles Dodgers reliever Pedro Baez with a two-out, walk-off single in the ninth inning Wednesday night, delivering the host San Francisco Giants a 2-1 victory over their National League West rival. The win was the Giants' second in the three-game series and came two innings after manager Bruce Bochy was ejected for arguing balls and strikes. With one out in the ninth, Steven Duggar's third hit of the game and a single by Gerardo Parra put two on for the Giants before Brandon Belt struck out.