KINGSBARNS, Scotland — Former British Open champion Louis Oosthuizen put himself in contention for another memorable victory at St. Andrews, taking a share of the lead Thursday after the first round of the Dunhill Links Championship.

KINGSBARNS, Scotland — Former British Open champion Louis Oosthuizen put himself in contention for another memorable victory at St. Andrews, taking a share of the lead Thursday after the first round of the Dunhill Links Championship.

The South African shot a 6-under 66 in excellent conditions at Kingsbarns, joining Rafael Cabrera-Bello, Markus Brier and Michael Hoey at the top of the leaderboard.

The tournament ends Sunday at St. Andrews, the scene of Oosthuizen's sensational seven-shot win in the 2010 British Open.

"There's nothing better than holding the claret jug at St. Andrews," Oosthuizen said. "Hopefully, at the end of the week, it's a different trophy. That would be special."

Former U.S. Open champion Graeme McDowell was one of six players a stroke behind after shooting a 67 at Kingsbarns, where top-ranked Luke Donald had a 69 on one of three courses at the $5 million event.

Fifth-ranked Dustin Johnson, the top American in the field, was five shots back at 71, while U.S. Open champion Rory McIlroy shot 72.

Justin Timberlake Shriners Hospitals for Children Open

At Las Vegas, Jhonattan Vegas and William McGirt shot 8-under 63s to share the first-round lead in the Justin Timberlake Shriners Hospitals for Children Open.

Vegas, the Venezuelan rookie who won the Bob Hope Classic in January for his first PGA Tour title, had 10 birdies and two bogeys at TPC Summerlin in the first of four Fall Series events.

McGirt, also a PGA Tour rookie, had eight birdies in a bogey-free round.

Nathan Green and Charlie Wi were a stroke back.

Jonathan Byrd, the winner last year when he made a hole-in-one on the fourth hole of a playoff with Martin Laird and Cameron Percy, opened with a 71.