Jon Rahm got off to a hot start and shot a 7-under 65 on Saturday on PGA West’s Stadium Course for a share of the lead with tour rookie Davis Thompson in The American Express.

Thompson’s run of eagles in the Southern California desert finally ended as the 23-year-old carded a 67, also on the Stadium Course, to settle into a tie with Rahm at 23-under 193. Thompson, who had five eagles in leading through the first two rounds, just missed a 35-foot birdie putt on No. 18 that would have given him a one-stroke lead.

Rahm, the world’s fourth-ranked player who won at Kapalua two weeks ago, and Thompson will make up the final group Sunday on the Stadium Course, which was one of three courses that hosted the first three rounds.

J.T. Poston and Christiaan Bezuidenhout, who shot a 10-under 62 on the Nicklaus Tournament Course, were four strokes behind the leaders. Tom Kim, Harry Higgs, Sam Burns and Taylor Montgomery were another stroke back at 18 under.

“Nothing but positive,” said Rahm, who will be playing for his ninth tour victory. “Ball-striking felt amazing. Hit a lot of great shots out there off the tee. Giving myself a lot of opportunities with the irons. Took advantage of quite a few of them. So very confident going into tomorrow and knowing that I’m going to have to shoot another low score if I want to have a chance to win.”

Rahm came into Saturday trailing Thompson by two strokes. He teed off seven groups ahead of Thompson and took the lead with a blistering front nine that included four birdies and an eagle on the par-5 fifth. The Spanish star cooled off on the back nine with just two birdies and a three-putt bogey on par-3 17th that cut his lead to one, before ending his round with a par.

Thompson birdied No. 12 to tie Rahm but then missed a short putt to bogey 14. He birdied the par-5 16th to tie Rahm.

“It’s great. I feel like I don’t have anything to lose in my rookie year,” Thompson said. “Just kind of freewheel it. But I’m excited to play with Jon. He’s obviously a top 5 player in the world. He’s very good. But I’m excited about the challenge and just looking forward to tomorrow.”

Second-ranked Scottie Scheffler was in a group of six at 17 under that included Dylan Wu, who had six straight birdies on his first nine in his round of 11-under 61 at the Nicklaus Tournament Course.

Henderson up 3 at LPGA Tournament of Champions

Brooke Henderson went from complete control of her game for two days to having to scratch out a good score Saturday. The result was a 3-under 69 and a three-shot lead in the Hilton Grand Vacations Tournament of Champions.

Henderson was up for the fight and moved to 14-under 202 in the LPGA Tour season opener at Lake Nona. The Canadian will take a three-shot lead over Nelly Korda (68) and Nasa Hataoka of Japan (66) into the final round.

Maja Stark of Sweden (68) and Charley Hull of England (69) trail by five.

After a pedestrian stretch of golf early on her second nine that included a bogey at the par-4 12th — only her second bogey of the week — Henderson managed to slide in a 30-foot curler for birdie from the left side of the 16th green.