Sheets ended up having the potential to come up to the plate in the 5th (which he did of course), which would be a very logical reason McClung started throwing should a PH be needed/used. Had there been runners an 2nd and 3rd with 2 out instead of 1st and 2nd with 2 out, I would think Ned almost certainly would have PH for Sheets. With runners on 1st and 2nd and 2 out, playing a man down in a 1 run game, I think it is safe to conclude that he didn't want to burn both a PH and an extra pitcher for that AB. Had the inning gone a little differently, would Ned have used a PH there? We'll never know, but I would certainly think so. That's all relevant because Sheets was at a fairly reasonable 85 pitches, and had worked a 1-2-3 4th. Yet again, upon closer inspection, the situation may not be as simple as those who look for reasons to criticize Yost would like it to be.