When Giants left-hander Madison Bumgarner struggled through five innings and 93 pitches in Sunday's 2-1 victory over the D-backs at Chase Field, manager Bruce Bochy had no qualms about again tapping into the bullpen. And why not? In sweeping three games from Arizona, the Giants 'pen allowed just one run in 13 2/3 innings, the last 12 2/3 of them scoreless.