The Cleveland Cavaliers forward had his appendix removed on Saturday night at the Orlando Regional Medical Center and stayed overnight at the hospital, CBS Sports reported Sunday, citing a team news release.
Casspi was to be re-evaluated on Sunday.
He had been taken to the hospital on Saturday and diagnosed with acute appendicitis, the statement said, adding that his status would be updated as appropriate.
The 6-foot-9 Casspi, a native of Yavne in central Israel, was averaging 4 points and 2.2 rebounds in limited minutes this season.
Media reports said that Casspi’s agents had requested a trade from the Cavs, but in a recent interview with JTA, Casspi said he had never made such a request.