Walker pitched a perfect inning and earned the save in Monday's 6-3 win over the Diamondbacks.
Walker has rebounded with a pair of saves since he took a walk-off loss versus the Orioles last Thursday. The right-hander is up to 10 saves this year, which is impressive considering he took over the closing job in mid-August and the Giants haven't exactly been a dominant team. He's added 22 holds with a 1.94 ERA, 0.84 WHIP and 99:17 K:BB across 79 innings in his second major-league campaign.