Arjun Atwal had one of the early tee times Saturday and he took advantage of good scoring conditions to post a bogey-free 6-under 64. That puts him at 6 under for the tournament, currently tied for seventh place with the leaders just about to tee off.

The 64 ties for the lowest score in Atwal's TOUR career; he's shot 64 six other times. Saturday's round was his 339th on TOUR.

Despite having a rocky finish to his second round Friday -- a double bogey and two bogeys in his last five holes -- Atwal shook it off Saturday. He put together a string of three straight birdies starting at the par-3 fifth when he nailed an approach shot to within nine feet.

On the backside, Atwal birdied the par-4 12th, 14th and 15th holes -- the latter when he rolled in a putt from just under 33 feet.

Atwal, a native of India, is making just his fourth TOUR start this year. He's still seeking his first TOUR win. His best finish was a tie for second at the 2005 BellSouth Classic. But he did win a tournament on the Nationwide Tour in 2008.

To replay Atwal's round on Shot Tracker, click here .

Charley Hoffman stumbled in, missing the green on his approach to the par-4 ninth, then failed to get up-and-down to save par. Still, his 4-under 68 leaves him just two shots off the lead late in the opening round at TPC San Antonio. Hoffman wasn’t exactly a picture of accuracy out there, hitting just 43 percent of his greens in regulation and just over 55 percent of his fairways, but he also took just 25 putts. Hoffman isn’t exactly known as a great putter, but he got the ball up-and-down well enough on most of his holes to get in the house with a good number.

Meanwhile, San Antonio resident Jimmy Walker is 3 under with two holes left in his round. Arjun Atwal and Garth Mulroy are at that number, too, with four holes to play. Mulroy has made just one cut in eight events this season, but that came just two weeks ago at Quail Hollow so maybe he has at least a little momentum going for him. -- Brian Wacker