Madison Bumgarner hit a grand slam and drove in a career-high five runs to overcome a shaky outing on the mound, sending the San Francisco Giants to a 6-5 victory over the Colorado Rockies on Friday night.San Francisco Giants' Madison Bumgarner, right, is greeted by teammate Brandon Hicks, left, after hitting a grand slam off Colorado Rockies starting pitcher Jorge De La Rosa during the fourth inning of a baseball game Friday, April 11, 2014, in San Francisco.San Francisco Giants' Madison Bumgarner hits a grand slam off Colorado Rockies starting pitcher Jorge De La Rosa during the fourth inning of a baseball game Friday, April 11, 2014, in San Francisco.Colorado Rockies' Nolan Arenado, left, slides past San Francisco Giants catcher Hector Sanchez to score during the eighth inning of a baseball game Friday, April 11, 2014, in San Francisco. Arendo scored on a single by pinch-hitter Charlie Blackmon.Colorado Rockies' Carlos Gonzalez, right, is greeted by teammate Josh Rutledge, left, after hitting a two run homer off San Francisco Giants starting pitcher Madison Bumgarner in the third inning of a baseball game Friday, April 11, 2014, in San Francisco.