We can now add Luke Kornet to the list of Boston Celtics centers unable to play right now because of injury.
Kornet recently sprained his ankle during practice and will be out one to two weeks, The Athletic's Jared Weiss and Shams Charania reported Friday.
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The good news is that if Kornet only misses one or two weeks, he should be back for the Celtics' first game of the 2022-23 NBA regular season against the Philadelphia 76ers on Oct. 18 at TD Garden.
The Celtics also will be without starting center Robert Williams for the next eight to 12 weeks as he recovers from a recent knee surgery.
The Celtics added frontcourt depth Friday, agreeing to a one-year, fully guaranteed contract with free agent Blake Griffin.