Tiger Woods has rebounded from a dismal U.S. Open with a 4-under-par 66 in the opening round of The Greenbrier Classic.

Helped by Thursday's morning rain that softened the Old White TPC course in West Virginia, Woods posted his lowest score of the season and matched his best in relation to par. It was only the fourth time he shot in the 60s in 21 rounds.

Two weeks ago at the U.S. Open, Woods had the highest 36-hole score of his pro career — 156.

He started on the back nine Thursday and shook off a double bogey on the sixth hole. He finished his round with three straight birdies.

Woods was four shots behind Scott Langley, who shot 62. Travelers Championship winner Bubba Watson was among those teeing off in the afternoon.