Hartenstein is dealing with left ankle soreness and won't return to Saturday's game against the Raptors. He finished with one point (0-1 FG, 1-2 FT) four rebounds and one assist in 23 minutes.
The fact that the Knicks are classifying Hartenstein's ankle injury as soreness rather than a sprain offers hope that he's not dealing with a major injury, but the starting center could still be at risk of missing Tuesday's game against the Nets. Precious Achiuwa would be the next man up to enter the starting five in Hartenstein's stead, and Jericho Sims could also be added to the rotation if Hartenstein misses time.