"Woods dealt with back spasms as he finished his first-round 72 on Thursday. He shanked his approach shot on the par-4 18th due to the spasms."
"It's been spasming the last three holes, and it just locked up on me,” Woods said Thursday of the shank on No. 18. “Didn't move, didn't rotate, and presented hosel first."
https://www.pgatour.com/article/news/latest/2024/02/16/tiger-woods-withdraws-second-round-illness-the-genesis-invitational-riviera-country-club