(CNN) -- Anthony Kim got his AT&T National title defense off to the best possible start at Congressional Country Club but will have tournament host Tiger Woods right on his tail going into Friday's second round.
Kim carded a course record 62 as he attempt to win the AT&T National for a second successive year.
American Kim shot a course-record, eight-under-par, bogey-free 62 on Thursday to set an early target for the late-starting world number one -- and then saw Woods post a 64 to take a share of second place overnight.
Woods was making up for lost time having missed last year's second edition of his own event, which benefits the Tiger Woods Foundation and honors U.S. servicemen and women, due to his knee injury. Top 10 celebrity golfers
Playing alongside Charley Hoffman and Lucas Glover, the man who succeeded him as U.S. Open champion at Bethpage Black 10 days ago, Woods sent down seven birdies and one bogey on the par-70, 7,255-yard Blue Course for a 64 to match DA Points and Bryce Molder.
Veteran Australian Steve Elkington put himself in contention with a 65, while England's Justin Rose put bad recent form behind him, having missed three cuts in succession, with a three-under 67 that leaves him five shots behind Kim in a tie for ninth.
A Ryder Cup hero for the Americans at Valhalla last September, Kim has struggled with injuries all year and he admitted earlier this week his confidence had been at rock bottom after missing the cut at The Players Championship in early May.
Yet he has turned a corner recently with a tie for 16th at the U.S. Open two weeks ago and last week's tie for 11th at the Travelers event.
That improvement continued at Congressional as Kim, starting early and playing the back nine first, made the turn at two-under with a 33 and came home with six birdies in 28. He even missed a birdie putt at the last, the par-five ninth, but had the luxury of a tap-in for par and a 62.
"It was a good day," Kim told Press Association Sport. "I really thought my way around the course. I did a good job of picking some intermediate targets and some better lines than we have been this whole year and I think that's what has led to the good play.
"It's been a tough year, it really has. The injuries have not allowed me to swing the way I wanted to and we're finally getting to that point where I can. So I'm looking forward to keeping the ball in play and making a couple of putts."
Glover had kept pace with Woods early on to get to three-under after seven holes but, having continued playing following his Bethpage Black heroics, the American struggled with three bogeys and one birdie on the back nine to finish with a 69.