Phil Mickelson maintained a one-shot lead after two rounds of the US PGA Tour's Northern Trust Open on Friday, buoyed by a dramatic eagle from the fairway that helped offset some less impressive play.

Kevin Na won the Justin Timberlake Shriners Hospitals for Children Open on Sunday for his first PGA Tour title, hitting three birdies near the end of his round to pull away for a two-stroke victory over Nick Watney.

Nick Watney, a two-time winner on the US PGA Tour this season, fired a seven-under 64 on Saturday to join Kevin Na atop the leaderboard after three rounds of the tour's $4.4 million Las Vegas event.

Kevin Na and Charlie Wi joined first-round leader Jhonattan Vegas at 12-under 130 on Friday to share the lead after 36 holes of the Justin Timberlake Shriners Hospitals for Children Open.

Kevin Na's first trip to Riviera Country Club came with his father back in 1995, when Na was a young golf enthusiast keen to get a glimpse of players like Corey Pavin and Fred Couples.

Australia's Aaron Baddeley fired a four-under par 67 on Saturday to take a one-shot lead at the PGA Northern Trust Open over veteran Fred Couples and US compatriot Kevin Na.