HONOLULU — Lucas Glover has withdrawn from the Sony Open with a sprained right knee that still is not strong enough for him to play golf.

Glover injured his knee when he took an awkward spill off a paddle board upon arriving on Maui for the season-opening Tournament of Champions. He withdrew from that tournament, but thought he might be able to play the Sony Open because Waialae is a relatively flat course and easier to walk.

The former U.S. Open champion hit three wedges and a 9-iron on the practice range Wednesday and realized his knee still wasn't ready. He planned to return home to see another doctor and give it more rest, and hopes to be able to play the Farmers Insurance Open in two weeks at Torrey Pines.