The Knicks will be without Mitchell Robinson on Sunday vs. the Pacers.
Frank Ntilikina also sustained an ankle sprain on Friday, but he is expected to play as is Trey Burke, who has been out with a sprained knee since Dec. 1.
Robinson exited Friday's game in the first half when he landed awkwardly on his ankle after he grabbed a rebound.
He was helped off the court by the training staff and Enes Kanter and underwent X-rays, which came back negative.
It is unclear just how long Robinson will be out.
The 20-year-old sprained the same ankle in training camp and left the season-opener after the first minute because of it, too.
"We got to figure out something with his ankles of his," head coach David Fizdale said, per the New York Post.
Robinson has shown flashes of his potential with his defense and highlight reel dunks.
Through 28 games, Robinson has 18 blocks -- or 1.8 blocks per game -- and is averaging 4.7 points and 3.9 rebounds per game.