PGA Tour: Patrick Cantlay leads Xander Schauffele and Will Zalatoris at Genesis Invitational

The 31-year-old American, who has eight PGA Tour career wins, was leading by five ahead of Saturday's round, but struggled as the chasing pack closed in following his one-under 71.

Xander Schauffele and Will Zalatoris both carded 65 to sit at 12 under par, with Luke List one shot further back at Riviera Country Club.

Cantlay made a fast start with an opening birdie, but handed the stroke back at the third when he missed a seven-foot putt to save par.

The world number seven parred his way to the turn and returned to the red numbers with a tap-in birdie at the 11th hole before adding another at the 13th to climb to 15 under.

Trouble off the tee at the penultimate hole led to a bogey, with his lead over his fellow Americans cut to two shots.

"I played solid golf today," Cantlay told pgatour.com. 

"I didn't make any long putts or anything. Didn't really give myself too many chances, but all in all a solid day and in good position for tomorrow."

Schauffele began with an eagle at the par-five first and produced a flawless round, which included four more birdies on the inward nine, while Zalatoris made seven birdies and one bogey.

Rory McIlroy carded five birdies and three bogeys in a mixed round of 69 to sit tied in 27th place on four under. The Northern Irishman followed a 74 on the opening day with a second-round 66.

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