Thunder forward Mamadi Diakite has been diagnosed with a left hip fracture and has been ruled out indefinitely, according to Joe Mussatto of The Oklahoman (Twitter links). Diakite sustained the injury during Sunday’s preseason game against Milwaukee, Mussatto adds.

It’s an unfortunate turn of events for Diakite, who was claimed off waivers by the Thunder last month and was trying to prove he deserved a spot on the regular season roster. Only $100K of Diakite’s minimum-salary contract is guaranteed, making him a potential casualty of a roster crunch.

Although the Thunder haven’t revealed their plans for their 15-man regular season roster, they’re carrying 13 players on guaranteed contracts, and Kenrich Williams is a lock for the roster despite his non-guaranteed salary. That leaves just one available 15-man spot — if Diakite’s injury takes him out of the running, Gabriel Deck and D.J. Wilson would likely be the top contenders for it.