Walker gave up a hit and struck out two in a scoreless ninth inning Saturday to record his third save of the season in a 4-3 win over the Mariners.
The right-hander continues to thrive in a high-leverage role. Walker hasn't allowed an earned run since July 27, and over 11 appearances since then he's posted a 0.63 WHIP and 24:2 K:BB in 12.2 innings to go along with his pristine ERA and all three of his saves. Camilo Doval was called back up Saturday and worked in a setup role ahead of Walker, but there's no sign that the former is going to get back into the closer mix for the Giants any time soon.