The Boston Celtics downgraded star Jaylen Brown to out with a calf injury for Thursday night's matchup with the Los Angeles Clippers at Staples Center.
The 23-year-old guard had suffered the injury when Russell Westbrook kneed his calf as both players went for a rebound in the fourth quarter of Boston's 116-105 loss to the Houston Rockets Tuesday night.
Brown has been one of the central figures for a Boston team locked in a battle with the Toronto Raptors for the top spot in the Atlantic Division.
Now in his fourth season, Brown is averaging career highs in points (20.2), rebounds (6.4), assists (2.2) and steals (1.1) per game.
The Celtics haven't had a lot of injury concerns this season, with the exception of Gordon Hayward fracturing his left hand in November.