Jay Haas has been shooting his age or better for the past three years, just never on a stage quite like Thursday in the U.S. Senior Open. Haas steadied himself from an up-and-down start at soggy Saucon Valley and played much younger than his 68 years down the stretch, posting a 4-under 67 to share the lead with Mark Hensby after the opening round.

Haas became the fifth player in U.S. Senior Open history to shoot his age, joining Tom Watson, Hale Irwin, Harold McSpaden and Jerry Barber, who did it nine times. Barber was the oldest first-time winner of a major in the 1961 PGA Championship.

“That’s a pretty good score to break [your age] on a course like this,” said Haas, who had shot his age six previous times on the PGA Tour Champions, but never in a major.