ATLANTA — Madison Bumgarner pitched into the eighth inning, Kelby Tomlinson drove in three runs and the San Francisco Giants beat the Atlanta Braves 6-1 on Wednesday night. Matt Duffy added a two-run double and Hunter Pence had an RBI single for San Francisco, which has won 16 of 21. Bumgarner (12-6), last year’s World Series MVP and a three-time All-Star, allowed seven hits, one run and struck out nine in 7 1-3 innings.