Walker (9-3) allowed a walk and struck out three over 1.1 scoreless and hitless innings to earn the win Thursday over the Diamondbacks.
Walker got the last four outs before the Giants walked it off with a Patrick Bailey double in the ninth inning. Walker has collected five saves, three holds and two wins over 14 appearances during a 16-inning stretch in which he's allowed just one unearned run and racked up 30 strikeouts. He's emerged as an elite reliever this year with a 1.88 ERA, 0.87 WHIP and 95:16 K:BB over 71.2 innings and continues to thrive since taking over the closer role in mid-August.