Boston Celtics forward Grant Williams has been suspended for one game without pay for using inappropriate language and having “reckless contact with” a female referee, the NBA said Wednesday.

The league added that the suspension will take effect Friday night when Boston hosts the Cleveland Cavaliers.

Williams was called for a technical foul and then ejected in the fourth quarter of the Celtics’ 120-102 loss at Chicago on Monday night. He had previously been called an offensive foul for an improper block against Zach LaVine.

He protested the call and, according to umpiring roster chief Marc Davis, he had “unintentional physical contact” with referee Cheryl Flores.

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