A dropped shot on the 16th hole by tournament host Tiger Woods allowed Geoff Ogilvy to seize the lead at the end of the third round of the Target World Challenge in California.
World number one Woods began the round with a one-shot lead and Woods still held that margin over Ogilvy with three holes to play.
But he bogeyed the par-five and Ogilvy’s closing birdie meant he leapfrogged Woods at the top of the leaderboard.
Woods is now joint second at 10 under overall with compatriot Chris DiMarco, who shot a second-successive 68.
Ogilvy, the US Open champion, fired a 67 – the best round of the day – to move to 11-under 205.
Playing in his first four-round tournament since the World Golf Championships in early October, Woods started the third round with a pair of birdies but played just par golf thereafter.
Englishman Paul Casey shot a second-straight 70 and is at 209, one shot better than first-round leader Henrik Stenson (73) and David Toms (68).