Jordan Spieth disqualified from Genesis Invitational for signing for ...

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

Cantlay began with an eagle and never let anyone close to him the rest of the round. He shot a six-under 65 to build a five-shot lead at the Genesis Invitational going into a weekend that won’t include Tiger Woods.

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…

Woods made another early exit, this one because of flu symptoms instead of his injured body. He withdrew after six holes and spent the next two hours getting intravenous fluids before leaving Riviera, along with a big chunk of the gallery.

“Not physical at all. His back’s fine,” said Rob McNamara, a longtime association and vice president of TGR Ventures. “It was all medical illness, dehydration, which now the symptoms are reversing themselves now that he’s had an IV.”