I’ll never give up on McIlroy. I think the PGA is likely harder for him to get up for than say the Masters but I expect that fact will serve him well in St. Louis.
It was captivating TV and I certainly felt bad for him. But this would only cost him a Ryder Cup spot if it happened the week before captain’s picks and it was clear a spot was on the line. Final-round bust-ups happen. He has a few more weeks to make a statement and in the process make the team.
Frayed nerve endings? The guy is still a specimen so I don’t think it’s that he’s physically tired. I think the reality is that he’s the 50th-ranked player in the world for a reason.