Los Angeles - Kevin Na fired a one-under par 69 on Saturday to take a two-shot lead in the PGA Tour's Charles Schwab Challenge, where three-time major winner Jordan Spieth was among those in hot pursuit.
Na, in search of a fourth PGA Tour title, started the day one off the lead of Sweden's Jonas Blixt - who slid down the leaderboard with a four-over 74.
Na seized the lead at 10-under par with back-to-back birdies at the first and second holes at Colonial Country Club.
An unlucky double-bogey at the par-five 11th cost him the lead, but he steadied himself with a birdie at 13 to finish with a nine-under par total of 201.
That put him two strokes clear of Spieth, fellow Americans Jim Furyk and Tony Finau, Taiwan's Pan Cheng-tsung and Canadian MacKenzie Hughes, who shared second on 203.
"After the double-bogey I hit a bad tee shot at the next hole and it looked like the wheels could fall off," Na said. "But I stayed positive, tried to put the next one in play."
The California, who carded a 62 on Friday, believes Colonial is one of a handful of courses used on the PGA Tour that gives him a good chance at a title.
"Over the years I've had some good rounds (at Colonial) and it's a golf course you don't have to overpower," he said.
"You have to keep it in play.
"From fairway in I'm a pretty good player, so I think it plays right into my game."
Hughes posted a bogey-free 65, hitting his second shot at the 18th to four feet for his fifth birdie of the day.
Pan, a month removed from his first PGA title at the Heritage in Hilton Head, South Carolina, had four birdies in his first 10 holes and briefly held the lead, but closed with back-to-back bogeys at 17 and 18 in a 68. Furyk and Spieth also carded two-under rounds while Finau signed for a one-over 71.
Pan said that after his Heritage victory he knows what he needs to do on Sunday to come away with another trophy.
"It's only a month ago, so I'm quite familiar with that," he said. "You've just got to hit really good shots."
He wasn't too discouraged by his bogey-bogey finish, noting that the narrow fairways left little room for error.
"Seventeen, you only have probably 10 yards wide fairway. If you miss it you will get blocked by a tree," he said.
"Eighteen, same thing. Obviously the last two holes weren't my best, but that's OK."
Spieth, seeking his first victory since the 2017 British Open, opened his round with back-to-back birdies - rolling in putts of 30 and 21 feet as his mastery of Colonial's greens continued.
He drained another long one for a birdie at seven, although that would prove to be his last birdie of the day.
Leading scores on Saturday in the third round of the PGA Tour 'S Charles Schwab Challenge at Colonial Country Club in Fort Worth, Texas (par-70, USA unless noted):
201 - Kevin Na 70-62-69
203 - Mackenzie Hughes (CAN) 68-70-65, Pan Cheng-tsung (TPE) 68-67-68, Jordan Spieth 65-70-68, Jim Furyk 69-66-68, Tony Finau 64-68-71
204 - Charley Hoffman 70-71-63, Austin Cook 72-67-65
205 - Ryan Palmer 68-69-68, Nick Watney 67-68-70, Jonas Blixt 67-64-74
206 - Andrew Putnam 69-70-67, Scott Piercy 70-68-68, Tyrrell Hatton (ENG) 71-66-69
207 - Peter Uihlein 67-73-67, Brian Gay 69-71-67, Emiliano Grillo (ARG) 69-70-68, Kevin Tway 68-70-69, Roger Sloan (CAN) 65-72-70, Jason Dufner 67-68-72, Rory Sabbatini (SVK) 68-66-73
208 - Matt Every 70-69-69
209 - Brandt Snedeker 74-67-68, Martin Laird (SCO) 72-69-68, J.J. Henry 67-73-69, Kevin Streelman 69-71-69, David Toms 71-68-70, Martin Kaymer (GER) 73-65-71, Daniel Berger 71-67-71, Josh Teater 68-70-71