(AP Photo/Denis Poroy)

SAN DIEGO (AP) Jon Rahm is playing some of his best golf with two victories and a runner-up in his last four tournaments. He was at his best Saturday at Torrey Pines, holing a chip for birdie and a full gap wedge for eagle to start his round.

Even after a 7-under 65 for a one-shot lead in the Farmers Insurance Open, Rahm knows as well as anyone that the hard work is still in front of him, mainly because of whoever might be behind him.

Three years ago, that was Rahm. He made two eagles over the last six holes for a 66 to capture his first PGA Tour title. This year, it could be Ryan Palmer and Rory McIlroy in the final group, maybe even Tiger Woods from five shots back.

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