Yoshinobu Yamamoto (6-4, 2.20) vs. Logan Webb (5-5, 2.58).
Yoshinobu Yamamoto is only two starts removed from a bad loss against the Yankees, but still has a 2.2 WAR this year and a 176 ERA+. Logan Webb hasn't had a win in his last four starts (two losses, two no decisions), and has a 148 ERA+ though only a 1.7 WAR.
Both clubs' aces go to battle tonight in the Ravine, with the Giants a full game back of the first-place Dodgers, having dropped a heartbreaker to the woeful Colorado Rockies on Thursday, giving up three runs in the bottom of the ninth inning to lose the game.