UCLA freshman guard Shabazz Muhammad injured his right shoulder during practice on Wednesday.
A team spokesman said Muhammad was scheduled to undergo an MRI in the evening, and would be reevaluated on Thursday.
Muhammad has been the subject of an ongoing NCAA investigation involving alleged improper benefits he received in his recruitment from boosters of his Las Vegas AAU program. He was one of the nation's mostly highly sought-after recruits last spring when he chose UCLA over Kentucky and Duke.
The school has only said that Muhammad, his family and UCLA are working with the NCAA during the process.