PHOENIX, Arizona (AFP) — Sahith Theegala fired a six-under-par 65 in cold, windy and rainy conditions on Thursday to grab the lead at the PGA Phoenix Open when darkness halted the first round.

The 26-year-old American, who was third at TPC Scottsdale in 2022, made seven birdies against a lone bogey to top the leaderboard.

"I played really well," Theegala said. "It's not often where every part of the game clicks during the course of the round."

"But it felt like through the bag I did something good with every club… made the short putts when I needed to. Really happy with the start. The weather was not good."

Ireland's Shane Lowry, the 2019 British Open champion, and South Korean Kim
Seong-hyeon were next in the clubhouse 67 with three-time major winner Jordan Spieth of the United States the only player in the clubhouse on 68.

Heavy rain in the early afternoon left the TPC Scottsdale layout unplayable and halted competition for 3 1/2 hours.

"It was horrible, as tough (as) conditions I can remember for a while," Lowry said.

Half the field of 132 had yet to complete the first round when sunset arrived, some players having as many as 16 holes to finish when play resumes Friday morning before starting their second rounds.

Among those still on the course, American Andrew Novak fared the best, one adrift of Theegala, at 5-under through nine holes.

Theegala won his only PGA title last September at the Fortinet Championship by two strokes over Kim.

Theegala began on the back nine with a birdie, added another at the par-3 12th and sank a birdie putt from just beyond 16 feet at the par-5 15th.

After holing out from 80 feet for birdie at the par-4 second, Theegala added a tap-in birdie at the par-5 third and sank a six-foot birdie putt at the par-3 fourth.

Theegala found a greenside bunker and made his lone bogey at the fifth but responded with an eight-foot birdie putt at the sixth.