MAMARONECK, N.Y. — All that hype over how tough the U.S. Open can be at Winged Foot. All that history of so many scores over par.

Thursday brought a surprise: All those red numbers.

Justin Thomas led the way with six birdies and only one bogey from a bad lie in the bunker, finishing with a 25-foot birdie putt that he barely touched for a 5-under 65.

It was the lowest score in a U.S. Open at Winged Foot, which is hosting the Open for the sixth time dating to 1929.