Isaiah Hartenstein missed the first month with a fractured hand — and now will miss at least a week with a calf strain. The Thunder are back to their small-ball era. The gap between Holmgren's injury and Hartenstein's return lasted over a week in Nov.

The Oklahoma City Thunder have announced that Isaiah Hartenstein suffered an injury against the Philadelphia 76ers and will be re-evaluated in one week. The Thunder will have a tough time navigating this stretch without the big man.

The Cavs snapped Oklahoma City’s franchise-record 15-game win streak at Rocket Mortgage FieldHouse. The Thunder will look to avenge that loss without Hartenstein and Chet Holmgren, who’s missed the past 29 games due to a pelvic fracture.

Thunder center Isaiah Hartenstein will be reevaluated in approximately one week after suffering a left soleus strain.

Oklahoma City Thunder center Isaiah Hartenstein is out at least a week with a calf issue and will be re-evaluated after that.

Twenty-one games into his tenure with Oklahoma City, Isaiah has adapted. Still, playing at Madison Square Garden for the first time since Hartenstein signed a three-year deal, $87 million contract with the Thunder, the venue Isaiah called home for two seasons, is unique.

Although the Thunder have experience in using their small ball lineup, this matchup may prove to be a bit more difficult.