Madson Bumgarner won his sixth straight decision to match a career best and hit a two-run homer in a six-run fifth inning that led the Giants over the Atlanta Braves 6-0 Thursday. Bumgarner (7-2) allowed four hits in 7 2/3 innings, struck out 11 and walked two, lowering his ERA to 1.91. The NL West-leading Giants have won 17 of their last 21 games and are unbeaten in Bumgarner’s last eight starts.