Jack Nicklaus won the first of his three Claret Jugs, one stroke ahead of runners-up Doug Sanders and Dave Thomas.

The U.S. Open changed to a four-day schedule the previous year in 1965, moving its final round from Saturday afternoon to Sunday.

It was the final Open for 1964 champion Tony Lema, who died in a plane crash two weeks later, hours after the PGA Championship.

"[7] He later developed a championship golf course and community in Dublin, Ohio, a suburb north of his hometown of Columbus.

Opened in 1974, Nicklaus named it Muirfield Village and it hosts his Memorial Tournament, a top invitational event on the PGA Tour since 1976.