The 1983 U.S. Open was the 83rd U.S. Open, held June 16–20 at Oakmont Country Club in Oakmont, Pennsylvania, a suburb northeast of Pittsburgh. Larry Nelson won the second of his three major titles, and only U.S. Open, one stroke ahead of defending champion Tom Watson. Nelson established a new tournament record with 132 strokes over the last 36 holes, breaking Gene Sarazen's 51-year-old mark. It was the second consecutive runner-up finish at Oakmont for Watson, who lost a sudden-death playoff to John Mahaffey five years earlier at the PGA Championship in 1978.