Before that, he was headed for his best round at a PGA Championship since his 69 at Kiawah Island in 2012.
His golf ball was buried in thick grass on a hill above the water.
Then came the meltdown on 18 the third of Quail Hollow's brutal "Green Mile" stretch of finishing holes.
More importantly, he managed to keep the lead.
"I don't think I was as free rolling as I thought I would be, as you can tell by some frustration", he said.
"He's got a couple events in the playoffs before we make the picks and I hope he gets hot". And I didn't do it. "Now I'm in a dogfight tomorrow and I have to be prepared for that", said the world number 25.
Pampling was obviously rushed, but regardless he produced what will likely be the worst shot of the tournament. He shot 77 and was in no mood to discuss the round.
Kisner already had given up a two-shot lead in the third round with a shot into the water on the 16th hole that led to double bogey.
For the second consecutive major championship, a dejected Phil Mickelson left the premises after two rounds, shaking his head and looking like a shadow of the man who's won 42 PGA Tour titles, including three Masters, the 2005 PGA Championship and the 2013 British Open. He shared the lead with Kisner after an opening-round 67, struggled in the second round, recording a 78. So no one knows what he was thinking with that second shot.
Nobody wants to do that, but there's a small loophole in the rules of golf which makes it preventable: if play is suspended due to darkness, players have the option of finishing the hole they're now playing. Points ended up with 73 in the round.
"I'm disappointed with the day I played today".
The par-4 hole had a higher aggregate scoring average Saturday (4.6) than two of the three par 5s. He identified four or five holes where he could make birdie, and he played for par everywhere else. His chip ran off the green, and he made double bogey. He was seven behind. "Disappointing would have been going home after two days". Oosthuizen saved par from a similar spot to the one Day was in on the 18th hole and shot 71. His right arm tightened up on the front nine and he required a therapist to work on it. He then inexplicably tried to advance it by hitting down the cart path. Andrew Magee did it at a Phoenix Open in 2001.
"It's the type of golf course you don't have to go out and make birdies".
"Have you ever seen a shot like that in a major championship?" said Nantz, fighting off laughter. He caught a decent lie and chipped close for his first birdie. Jason Day similarly had a chance to push himself into contention after a tremendous 66 on Friday, and he was right in the thick of things until absolutely collapsing on 18.