IRVING, Texas -- The talk before the HP Byron Nelson Championship was about a field lacking in star power.
To the rescue comes a 16-year-old Dallas high school junior named Jordan Spieth.
The first high school amateur to play in the tournament since Tiger Woods in 1993 fired a 3-under 67 Saturday -- his third straight sub-par round and his best of the tournament -- at windy TPC Four Seasons Resort & Club.
That dropped him to 6-under 204 for the tournament, giving him a legitimate chance to win his PGA Tour debut. He is tied for seventh, sixth shots behind leader and Fort Worth resident Jason Day.
"I guess I'm going against everyone's odds," Spieth said after his round. "No one really expected me to make the cut, except for a few people. But you know what? I came out here to win a tournament, and I've got an outside chance."
Spieth, who was cheered on by the largest gallery of the tournament, had them roaring early when he holed a sand shot from a green-side bunker for birdie on the opening hole.
Dallas Jesuit's two-time state champion went on to make five more birdies and three bogeys.
He had his poorest ball-striking day of the tournament statistically, hitting only half the greens in regulation, but he needed only 24 putts.
"I've got underwear older than him," joked 49-year-old Kenny Perry, who played one group in front of Spieth. "Good for him and good for the game."
For Sunday's final round, Spieth will tee off at 11:54 a.m. CDT and is paired with Dallas' Corey Pavin, the 2010 U.S. Ryder Cup captain. The pairing will be the fifth to last to tee off.
In honor of Spieth, tournament officials announced that anyone age 16 or younger would be admitted free to Sunday's final round.
Spieth is the sixth-youngest player to make a cut. The best finish for someone so young was Italy's Matteo Manassero, tying for 13th at the 2009 British Open.
Information from The Associated Press was used in this report.