Mackenzie Hughes watched his 60-foot eagle putt from the back of the green to the front on the par-5 13th slide into the cup.
“It’s a golf course where anything can happen,” said Oosthuizen, in the mix at a major for the second straight time.
They were tied with Henley, who had a 2-shot lead early on the back nine and appeared to be hanging on for dear life at the end.
“I thought like two 68s over the weekend from where I was after Friday was going to have a good chance,” said McIlroy, who started the third round 6 shots behind.
Woods is recovering from his February car crash that badly injured his legs and is not back at Torrey Pines.
“I know Tiger’s was further right, but halfway there, I loved it,” Hughes said.
Henley holed a bunker shot on the par-3 11th for birdie for a 2-shot lead and made a great par save from the cabbage behind he 12th green.
Thirteen players remained under par going into the final round.
He took a penalty drop instead of going into the ravine — a smart decision considering television showed a large rattlesnake in the area — and limited the damage to a bogey.
I feel like I’m starting to understand major championship golf and how to play it and how to go about managing my game, my attitude and just my patience level.
Koepka, meanwhile, was among those who lost a good opportunity.