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Oklahoma City Thunder center Isaiah Hartenstein will be sidelined for five to six weeks with a "small, non-displaced" left hand fracture, ESPN's Shams Charania reported on Thursday.
The former New York Knicks star suffered the injury during Tuesday's preseason win over the Denver Nuggets, per Charania.
Oklahoma City's center depth will now be tested with both Jaylin Williams and Kenrich Williams also sidelined by injury. Ousmane Dieng could get more minutes in their absence.
The Thunder opens the regular season next Thursday against the Nuggets in Denver.
This article will be updated soon to provide more information and analysis.