Jordan Spieth admitted to signing for the wrong score at The Genesis Invitational at Riviera on Friday as the three-time major champion was disqualified for the first time in his career.
The PGA Tour said that Spieth had signed at the end of the second round for a three on the par-three fourth hole when he had made a four.
Spieth's disqualification was his first in 263 tournaments played on the PGA Tour.
"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," the 30-year-old wrote on X, formerly Twitter.
"Rules are rules, and I take full responsibility.
"I love this tournament and golf course as much as any on the PGA Tour so it hurts to not have a run at the weekend."
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. I love this tournament and golf course as much as any on @PGATOUR so it hurts…
— Jordan Spieth (@JordanSpieth) February 17, 2024
Patrick Cantlay leads the tournament by five strokes at the midway point, while both Rory McIlroy and Seamus Power recovered from poor opening rounds to make the cut with rounds of 66 and 68 respectively on Friday.
