It didn’t take long for the NBA injury bug to bite New York Knicks rookie Kevin Knox. In only his third game as a pro, Knox has sustained what looks like a serious lower-body injury, while he was making a drive to the basket late in the first quarter of Saturday night’s home date with the Boston Celtics.

According to Ian Begley of ESPN, Knox has been knocked out of the contest.

Kevin Knox appeared to turn his left ankle severely. He was helped off the court and headed to the locker room. He’s now disqualified from the game because he couldn’t shoot the subsequent free-throws.

Knox was trying to make his way to the basket when he appeared to have turned his ankle while Celtics guard Terry Rozier was blocking the former Kentucky Wildcats star’s path.

How Knox twisted his left ankle is agonizing to look at, and it’s going to be more painful to watch for the Knicks if the first-year forward will miss a significant amount of time. Before he got ruled out of the game, Knox scored just a point in four minutes of action.

The Knicks will have a full day of rest on Sunday before taking on the Milwaukee Bucks on Tuesday, but that may not be enough time for Kevin Knox to recover. In any case, the Knicks have no reason to rush Knox back.

Knox made his NBA debut last Wednesday, when the ninth pick of this year’s NBA Draft scored 10 points in 24 minutes of floor duty off the bench.