McArthur (5-7) allowed four runs on three hits and a walk while failing to record an out versus the Yankees on Monday, taking the loss and a blown save.
Entering Monday, McArthur had allowed just one run over his previous 11.2 innings after losing the closer job in early August. He couldn't find any traction in the seventh inning Monday, with Austin Wells' three-run home run being the big hit against McArthur. The right-hander is now at a 5.01 ERA, 1.40 WHIP and 48:12 K:BB over 55.2 innings, though his ERA is 7.27 over 17.1 innings since the All-Star break.