The Hornets have not acknowledged anything beyond saying Rivers suffered an injury to his hand. According to SB Nation, he broke a bone and is expected to miss four to six weeks, which could spell the end to his season.
The Hornets are 21-41 and well out of the Western Conference playoff picture.
Rivers, the 10th overall pick in last June's draft, had 10 points on 5-of-6 shooting in the first half, helping the Hornets build a lead that grew as large as 25 points in the second quarter.
Later in the period, Rivers jammed his hand on teammate Greivis Vasquez's body after making a steal that started a fast break.
Rivers, the son of Boston Celtics coach Doc Rivers, was having one of his better games up to that point. He came into the game averaging 6.1 points on 36.5 percent shooting to go with 2.1 assists per contest.
Information from The Associated Press was used in this report.