Greensboro: Tiger Woods fed off an "electric" atmosphere to card his lowest score in two years on the PGA Tour, a six-under 64 that left him two shots behind the first round leaders at the Wyndham Championship on Thursday.

Woods was greeted like a rock star by hundreds of fans when he arrived on his first tee under gloomy skies at Sedgefield Country Club.

And he did not disappoint the droves that turned up at the crack of dawn, promptly chipping in from 55 feet for birdie at his first hole, the par-four 10th.

Despite a bogey at the very next hole, Woods finally got his putter working to roll in six more birdies for his lowest round on Tour since firing a 61 in the second round of the 2013 Bridgestone Invitational.

"It was electric, especially early," Woods said after draining a 10-footer to save par at his final hole.

"My iron play was very solid but it was nice to finally get some (birdie) putts going in. On top of that it was nice to make some par putts," said Woods.