Kelby Tomlinson hit a grand slam for his first career home run and Marlon Byrd added a three-run shot, leading Madison Bumgarner and the San Francisco Giants over the Chicago Cubs 9-1 on Thursday. The win moved the Giants within 5 1/2 games of the Cubs for the second NL wild-card spot. Tomlinson homered off James Russell in the eighth and received a standing ovation from the sellout crowd when he took his position at second base in the ninth.