Oosthuizen leads in Mexico

Oosthuizen leads in Mexico

Oosthuizen leads in Mexico

Leishman, one of four Australians in the field, trails first round leader Louis Oosthuizen by five after signing for a 2-under 69 marred by a dropped shot at the 17th hole.

Ireland's Paul Dunne booked a place in the tournament by way of his top-20 finish in last year's Race to Dubai but all did not go to plan for the Greystones man on the opening day as he could only manage a round of 73 to finish at two over par, nine shots off the lead held by Louis Oosthuizen at seven under.

The former British Open champion offered a timely reminder that on his day he is still among the game's elite as he carded a bogey-free seven-under-par 64 at Club de Golf Chapultepec in Mexico City.

Reigning PGA Tour Rookie of the Year and American Xander Schauffele walked off the course in a tie for second position alongside internationals Chris Paisley and Shubhankar Sharma.

There were moments of normality early on Thursday when Bubba Watson, who won his last start at the Genesis Open and already has a WGC on his resume (2015 HSBC Champions), moved to 7 under for a two-stroke lead following three consecutive birdies at the turn, but the left-hander's unraveling was as sudden as it was spectacular when he played Nos.

"I've been swinging it pretty good the last two or three weeks". "I've got a nice little cut going, and it's nice to be able to just aim left and swing away", Oosthuizen said.

"It's the biggest tournament I've played in by a long stretch", Paisley said.

"I'm surprised I shot six-under".

World Super 6 Perth victor Kiradech Aphibarnrat shares sixth place alongside Rafa Cabrera Bello of Spain while countryman Jon Rahm is alone in 7th place at 4-under.

World Number 1 Dustin Johnson, who is back defending his title also sent the announcers into hysteria as he came agonisingly close to holing out on the par 3 17th.

Spanish star Jon Rahm had six birdies and two bogeys for a 67 to be outright seventh at four under heading into the second round.

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