D. Johnson withdraws from Hero, still plans to play Presidents Cup

Dustin Johnson will need an extra week before he returns to action.

The world No. 4, who hasn't played since undergoing left knee surgery in September, announced Saturday on Twitter that he has withdrawn from next week's Hero World Challenge in the Bahamas. Johnson added that he remains on track to represent the U.S. in the Presidents Cup, which begins Dec. 12 in Australia.

“After a lot of careful thought and consultation, I have decided that it is in my best interest if I withdraw from next week’s Hero World Challenge,” Johnson wrote. “While my recovery from knee surgery is complete, I feel another week of physical therapy and practice will best prepare me for the Presidents Cup. I have…