Round 3 at 2012 RBC Heritage

1 of 7 Carlos M. Saavedra/SI
Carl Pettersson birdied five holes in a row on the front nine on his way to a five-under 66 and a one-shot lead heading into the final round.
2 of 7 Carlos M. Saavedra/SI
Colt Knost is one shot back after a two-under 69.
3 of 7 Stephen Morton/AP
Boo Weekley is four strokes off the lead.
4 of 7 Stephen Morton/AP
Brandt Snedeker overcame a double bogey to finish with a 69.
5 of 7 Stephen Morton/AP
Luke Donald, who needed to finish tied for eighth or better to remain No. 1 in the world, will likely lose the top spot after a 71 on Saturday.
6 of 7 Stephen Morton/AP
Kevin Na made four birdies and two bogeys for a 69.
7 of 7 Stephen Morton/AP
Stuart Appleby made three birdies and three bogeys for a 71.