Tell us again, who's leading the PGA Championship?

By PAUL NEWBERRY | August 12, 2011 | 9:00 PM EDT

Jason Dufner reacts after making a birdie putt on the ninth hole during the second round of the PGA Championship golf tournament Friday, Aug. 12, 2011, at the Atlanta Athletic Club in Johns Creek, Ga. (AP Photo/Charlie Krupa)

JOHNS CREEK, Ga. (AP) — Jason Dufner couldn't have seen this coming. Not after missing the cut in his last four tournaments.

Ditto for Keegan Bradley, whose career is just getting started. Heck, he'd never even played in a major until he got to Atlanta Athletic Club.

But there they are Friday, sitting atop the leaderboard midway through the PGA Championship.

Dufner shot a 5-under 65 on a day when the average score was nearly eight strokes higher. Bradley was even better, turning in a 64 that left him tied with Dufner at 5-under 135.

They're not the only unfamiliar names running at the front of the pack. One shot back is a group that included D.A. Points and John Senden. Brandt Jobe, Brendan Steele and Anders Hansen are among those just two strokes behind.