WHITE SULPHUR SPRINGS, W.Va. (AP) -- Defending champion Scott Stallings birdied his final three holes for a 67.

Vijay Singh shot a 7-under 63 on Thursday to take the first-round lead in the Greenbrier Classic, leaving Tiger Woods eight strokes back. The 49-year-old Singh birdied his final four holes on The Old White TPC course. He won the last of his 34 PGA Tour titles in 2008.

Former Knoxville Open Champ, Jeff Maggert, who's a year younger than Singh, was a stroke back at 64 along with Jonathan Byrd and Martin Flores. U.S. Open champ Webb Simpson topped a group at 65.

Woods, coming off a victory Sunday at Congressional, had a 71. He stumbled with a double bogey on the par-5 17th, driving into a hazard, taking a penalty stroke and three-putting from 20 feet.

Phil Mickelson, who missed the cut last year, also had a 71.