India's Arjun Atwal shot a seven-under-par 63 to move into a one-shot lead at the halfway stage of the McGladrey Classic in Georgia.
Atwal had eight birdies and one bogey, hitting 14 greens in regulation and taking just 25 putts at the Sea Island course.
But he may well need more of the same over the weekend if he is to retain his PGA Tour playing rights.
He is currently 175th on the money list and probably needs at least a top-five finish to climb into the crucial top 125 who keep their cards for 2013.
But for now he is revelling in a superb second round, telling the PGA Tour's website: "Oh, it feels great. I don't even know how many (putts) I made.
"Yeah, I'm in a desperate situation. I got no choice to either win or finish in the top two, I think my caddie figured out. So I just gotta grind it out."
Atwal is a shot clear of tournament host Davis Love III, who had a second round 66 and Jim Furyk (65).
England's Greg Owen - who opened with a 64 - dropped back into a share of seventh place on seven-under after a 69.