Woods hit a bullet with a slight fade at the left edge of the green and heard the crowd cheer as the slope and the grain took the ball to within 4 feet for birdie.
And just like that, he was on his way.
In a World Golf Championship with the biggest names in the hunt, Woods ran off six birdies in an eight-hole stretch around the turn in a clean, crisp exhibition. That sent him to a 7-under 65 and a two-shot lead over former U.S. Open champion Graeme McDowell.
Woods has made 17 birdies in two rounds, his most ever on the PGA Tour, though that wasn't the most important number.
"It left me a two-shot lead," Woods said.
He was at 13-under 131, his lowest 36-hole score on tour since the 2009 AT&T National.
Rory McIlroy showed signs of turning the corner with a 69, although he ended with a sloppy three-putt bogey. It was his first round under par this year, a small consolation for the world's No. 1 player. He was still 11 shots behind Woods.
Tiger Woods -13
Graeme McDowell -11
Phil Mickelson -10
Steve Stricker -10
Rory McIlroy -2