Standing on the tee at the 201-yard, par-3 16th, Mickelson was 5 under on the day and right in the mix at Muirfield Village. He found the water off the tee, but Mickelson was still able to walk away with bogey.
Even before he made bogey at 16, Mickelson had never been a fan of the hole after Jack Nicklaus redesigned it in 2010.
"It's a feast or famine hole for me," Mickelson said. "It doesn't set up well for a left-handed shot dispersion. It has to be a perfectly struck shot. And I just go in the water there most of the time, because I don't want to pull it way to the right."
From there, things went from bad to worse. Mickelson made double from the middle of the fairway at 17, then he chopped it down the right side of the 18th hole and three-putted for another double bogey.
Five under to even par, just like that.
"I was playing well, but the last three holes just threw away a good round," he said.