Golf Capsules

LOS ANGELES (AP) Camilo Villegas hasn't make a cut all year and has only broken 70 one time in four previous trips to Riviera, so it was mildly surprising to see him with an 8-under 63 to build a three-shot lead Thursday in the Northern Trust Open.

That wasn't the biggest surprise.

One spot from the bottom of the leaderboard was Jordan Spieth, the world's No. 1 player who shot an 8-over 79 on one of his favorite courses. It was his worst start ever as a pro, and his highest score since an 80 in the third round of the 2014 Tour Championship.

And there was one more surprise for everyone. Riviera, which played so fearsome during the practice rounds under a hot sun, was softer than usual after a steady overnight rain that never cleared until moments before the first round began.

Bubba Watson, who won at Riviera two years ago with a 64-64 weekend, opened with a 66 along with Chez Reavie and Luke List.

Rory McIlroy, making his first PGA Tour start this year and his debut at Riviera, opened with two quick birdies and added two more on the front nine for a 67. He was in a large group that included 22-year-old Charlie Danielson, the Illinois senior who earned a spot in his first PGA Tour event by winning a collegiate qualifier on Monday.

Only one other player in the 144-man field shot worse than Spieth. Still to be determined is whether his ball moved before hitting a chip on the ninth green. Spieth asked rules officials to review the video.

A decision was not expected until Friday. It would be a one-shot penalty if the ball did move.

That was the least of his worries. The round got away from him on the back nine when he kept missing greens and leaving himself short par putts that are difficult on poa greens in the afternoon. Spieth dropped six shots over the last seven holes, including a three-putt double bogey from 8 feet on the 18th.

WOMEN'S AUSTRALIAN OPEN

ADELAIDE, Australia (AP) – SooBin Kim shot a course-record 9-under 63 to leave defending champion and top-ranked Lydia Ko seven strokes behind in the Women's Australian Open.

The 22-year-old Kim, a Canadian-based South Korean, had a three-stroke lead over American Casey Grice and Germany's Caroline Masson on The Grange's West course.

Five-time champion Karrie Webb of Australia was four strokes back after a 67.

Ko opened with a 70. She won the New Zealand Women's Open on Sunday.

Kim, who moved to Canada with her family when she was 10, birdied seven of her first 12 holes. The former University of Washington player broke the women's course record of 66 set by Australia's Nadina Taylor at an amateur event in 2000.

MAYBANK CHAMPIONSHIP MALAYSIA

KUALA LUMPUR, Malaysia (AP) – Australia's Nathan Holman shot a 7-under 64 in hot conditions at Royal Selangor to take a one-stroke lead in the inaugural Maybank Championship Malaysia.

England's Danny Willett, coming off a victory two weeks ago in Dubai, was a stroke back along with countryman Tommy Fleetwood, American Peter Uihlein, France's Alexander Levy, the Philippines' Angelo Que and Spain's Jorge Campillo. South Africa's Louis Oosthuizen had a 67, and Germany's Martin Kaymer shot 71.

The tournament is sanctioned by the European and Asian tours.