Isaiah Hartenstein can't return sooner for an Oklahoma City Thunder team without star big man Chet Holmgren for quite some time.

Chet Holmgren has been ruled out for at least eight to ten weeks following a pelvic fracture, and OKC's main offseason addition will now need to step up.

OKLAHOMA CITY — Oklahoma City Thunder center Isaiah Hartenstein will miss at least a month after sustaining a small, non-displaced fracture in his left hand during a preseason game in Denver. The Thunder said Thursday that Hartenstein, who was hurt in Tuesday’s game, will be re-evaluated in five to six weeks.