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 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 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.