Russell Westbrook underwent arthroscopic surgery on his right knee Wednesday, a procedure that likely will force him to miss the entire preseason and could sideline him for the Oklahoma City Thunder's first few regular-season games.
Westbrook will be re-evaluated in four weeks, with the Thunder opening the season Oct. 16 against the Golden State Warriors.
If Westbrook is cleared after four weeks, he'll be available to play in the Thunder's opener against the Warriors, but obviously there will be no rush to get him back on the floor.
Westbrook experienced some stiffness in the knee over the last week during individual workouts while preparing for training camp.