It was the best round at Quail Hollow since McIlroy’s 61 in the 2015 Wells Fargo Championship in which he crushed the field. McIlroy’s score came before a course change at Quail Hollow, when par was 72.

“My 61 was better,” McIlroy said with a laugh. “... It’s a different course. I mean, 9 under around this place is pretty good.”

Uihlein, who is seeking his first PGA Tour win, didn’t have much time to celebrate before being taken to be randomly drug tested.

“It’s totally ironic,” Uihlein said. “First low round of the year, I feel like, and I have to go (urinate) in a cup.”