Hartenstein (Achilles) won't play in Tuesday's game versus the Nets, Ian Begley of SportsNet New York reports.
Hartenstein will miss Tuesday's contest after being downgraded from questionable to out with a left Achilles injury he suffered against Toronto. Jericho Sims and Precious Achiuwa will likely receive increased playing time in Hartenstein's absence. Hartenstein's next chance to suit up is Thursday's matchup with Denver.