The call left the bases empty with two outs for reliever Dominic Leone. Leone struck out the next hitter to finish the frame unscathed.
McClendon has now challenged 21 calls this season, and this was the 10th decision that was overturned.
Greg Johns is a reporter for MLB.com. Follow him on Twitter @GregJohnsMLB as well as his Mariners Musings blog. This story was not subject to the approval of Major League Baseball or its clubs.