PEBBLE BEACH >> The changing weather was only outdone by the fluctuations on the leaderboard at the AT&T Pebble Beach Pro-Am on Saturday.

Sepp Straka moved into a four-stroke lead after two holes, lost the lead in mid-round and moved back into a lead with a birdie on the 18th hole Saturday at Pebble Beach Golf Links.

Straka, a three-time PGA Tour winner, hit his third shot on the final to about 4 feet and completed his comeback round with four birdies in his final five holes en route to a 70 and a 200 total. He leads Rory McIlroy and Shane Lowry by one shot going into Sunday’s final round.

After consecutive 65s and only two bogeys in his first 36 holes, Straka continued his stellar play early in the third round. His opening birdies moved him to 16 under for the first time and a four-shot lead, the tournament’s largest.

But Straka’s consistency abruptly ended. He bogeyed the first three holes on his back nine, falling to 12 under.

“I’ve battled some flu symptoms out there most of the week,” said Straka. “Honestly, the pro-am format might have helped me the first two days, it was kind of a slow round so I could kind of take my time and save some energy.

“I am definitely feeling a little bit fatigued, but honestly with these conditions, even if I was 100 percent, I would be feeling a little bit fatigued. I’m just looking forward to tomorrow.”

While Saturday had mixed weather with periods of high winds and lashing rain, Sunday there’s no rain in the forecast and just light 6-9 MPH winds expected.

Lowry, the former British Open winner, was pleased with his play in the poor conditions

“I drove the ball really well and I holed some nice putts,” Lowry said. “The greens are quite slow and to get the ball to the hole is pretty hard. I felt like my pace is really good and I did a lot of things right.”

Justin Rose, tied with Cam Davis and Tom Kim for fourth at 14 under after a 68, embraced the weather’s obstacles.

“I felt very into the round; I felt very committed,” said Rose. “I enjoyed the challenge and the battle. I felt like it was one of those rare days you walk off and you feel like ‘OK, yeah, I’m pretty happy with the day’s work.’”

Low scoring began early. Jake Knapp moved to 12 under with five birdies in his first six holes. Taylor Pendrith moved to 11 under with four birdies in his first seven holes. He was joined at 11 under by McIlroy who had three birdies in his first five holes. Jason Day had two birdies and an eagle in his first seven holes to move to 9 under. Lowry had two eagles and a birdie in his first three holes to also move to 12 under.

Scottie Scheffler, the World No. 1 playing for the first time after recovering from hand surgery in December, had a 3-under 69 and is group among five players at 10 under.

Eight players are within five shots of the lead. Low scores continue to be the trend as 10 of the 79 in the filed are over par.

“I think I hung in there well; I took advantage of a few opportunities,” said Scheffler. “I hit a lot of good putts out there that I felt like were going right around the edge. It was challenging. There was a lot of adjusting on the fly out there.”

Defending champion Wyndham Clark, the 2023 U.S. Open winner, had a 1 under 71 en route to 2-over-par 218 total.

Jordan Spieth, the 2017 AT&T winner playing for the first time this season after recovering from wrist surgery last August, faltered.

The former No. 1 and 13-time PGA Tour winner, began the third round at 2 under. But beginning on the 10th hole, he bogeyed the 17th and double-bogeyed the 18th to complete his opening with a 41. He finished with a 77 and is 5 over and tied 77th in the field.