SAN FRANCISCO — What began as a promising quest for a 15th major championship dissolved into disappointment Sunday for Tiger Woods in the 112th U.S. Open at the Olympic Club in San Francisco.

After sharing the 36-hole lead, Woods went backwards the last two rounds. He followed up Saturday’s 5-over-par 75 with a 73 Sunday and tied for 21st at 7-over 287, six strokes behind winner Webb Simpson.

“Yesterday, I was just a touch off,” Woods said. “That’s fine. I’m still in the ballgame. Today, I just got off to a horrific start and just never got it going early, and unfortunately I put myself out of it.”