Jason Dufner holds a one-shot lead over Jamie Lovemark after the second round of the CareerBuilder Challenge after being one of the few players to find consistency in California.
The American produced a brilliant seven-under round of 65 at PGA West in La Quinta, while Lovemark recorded identical figures on the Jack Nicklaus Tournament course.
The round leaves Dufner, who recovered from a bogey at the tenth hole to birdie the next two holes, at 15-under par after a blistering six-under 30 on the front nine.
Defending champion Bill Haas, meanwhile, is well positioned in a group of five just two shots back from Lovemark with Adam Hadwin, Jason Gore, Andrew Loupe and Anirban Lahiri.
Lahiri, who shared the lead after the first round, struggled on the tournament course with a 68, while Gore was the big mover with an eight-under 64.
The 2002 and 2004 winner Phil Mickelson is also in contention just four strokes shy of Dufner’s pace after he fired a 65, also on the tournament course.