Luis Matos hit a walk-off sacrifice fly in the 10th inning, Spencer Howard pitched four scoreless innings and the San Francisco Giants beat the MLB-leading Philadelphia Phillies 1-0 on Tuesday night. After the Phillies failed to score in the top of the 10th off Sean Hjelle (2-1), automatic runner Tyler Fitzgerald advanced to third on a flyball by Wilmer Flores before Matos knocked him in with a flyball to left off Matt Strahm (3-1).