Miami Mike Weir shot a career-low 62 for a two-stroke lead in the Genuity Championship.
With two eagles on his first eight holes, Weir took advantage of nearly perfect conditions Thursday to post the lowest first-round score in the 40-year history at Doral Country Club.
Glen Day had eight birdies in a round of 64. He missed three putts inside 8 feet and made only two putts longer than 10 feet. He was tied with Stewart Cink, whose 64 was the best round of the afternoon when a breeze picked up.
Davis Love III finished with a 65, along with Steve Flesch, Harrison Frazar and K.J. Choi of Korea.
Ernie Els had a bogey-free 66 and was joined by Hal Sutton, three-time Doral champion Andy Bean and Nissan Open winner Robert Allenby, who proved he can play just as well in balmy sunshine as the wet rain in California.
Even 61-year-old Jack Nicklaus, playing on the PGA Tour for the first time this year, had few complaints with his 2-under 70 except for three straight bogeys as he was making the turn.
"I fell asleep in the middle of the round," Nicklaus said. "But at my age, I need a nap."