Madison Bumgarner struck out 10 in seven scoreless innings and Hunter Pence hit a three-run homer off Adam Wainwright as the surging San Francisco Giants beat the St. Louis Cardinals 9-4 on Friday night.St. Louis Cardinals' starting pitcher Adam Wainwright (50) hands the ball to manager Mike Matheny (22) as he comes out of the game against the San Francisco Giants in the fifth inning as Cardinals' Yadier Molina, left, and Matt Carpenter, center back, look on during a baseball game on Friday, May 30, 2014, in St. Louis.San Francisco Giants' Hunter Pence connects on a three-run home run against the St. Louis Cardinals in the second inning in a baseball game on Friday, May 30, 2014, in St. Louis.St. Louis Cardinals starting pitcher Adam Wainwright throws against the San Francisco Giants in the first inning in a baseball game on Friday, May 30, 2014, in St. Louis.San Francisco Giants' Brandon Hicks, right, forces out St. Louis Cardinals' Allen Craig (21) and completes the double play as Cardinals' Jhonny Peralta is out at first in the fourth inning in a baseball game on Friday, May 30, 2014, at Busch Stadium in St. Louis.