LOS ANGELES (AP) — Jordan Spieth signed for the wrong score on Friday at the Genesis Invitational and was disqualified for the first time in the 263 tournaments he has played on the PGA Tour.

Spieth owned up to the mistake in a post on X.

“Today, I signed for an incorrect scorecard and stepped out of the scoring area, after thinking I went through all procedures to make sure it was correct. Rules are rules, and I take full responsibility,” he wrote.

Spieth, who won an NCAA title with Texas at Riviera, said he loves the course as much as any on the PGA Tour and “it hurts to not have a run at the weekend.”

Spieth was within three shots of the lead at the turn in the second round at Riviera until he dropped three shots as Patrick Cantlay, playing in his group, began to pull away.

Spieth made double bogey on the 18th hole for a 73, leaving him 10 shots behind. But he signed for a 3 on the par-3 fourth hole when he actually made a 4, leading to the disqualification. Spieth had missed the green to the left, chipped to about 4 feet and lipped out.

That leaves 51 players in the field for the weekend at Riviera. The signature event had a 36-hole cut to top 50 and ties, and anyone within 10 shots of the lead.

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