Phil Mickelson played himself out of contention in the final round by shooting a 6-over 41 on the front nine. He had four bogeys and a double-bogey (on No. 9) to fall into 39th place
Another veteran, Jim Furyk, was making a move but dropped back when his approach shot to No. 16 found the pond in front of the green and he took a bogey 6.
Sean o'Hair had two birdies in his first four holes to stand at 11-under par, 2 shots ahead of Hunter Mahan and Ryan Palmer.