Oklahoma freshman running back Joe Mixon is not reporting for team activities "at this time," the university announced in a statement Wednesday.
Mixon is under investigation for allegedly assaulting an Oklahoma female student at a restaurant near campus early Friday morning.
Oklahoma players reported for preseason camp on Wednesday. The team's first practice is scheduled for Thursday.
The recruiting website Rivals.com rated Mixon No. 1 among running backs in the class of 2014.
Mixon was expected to compete for playing time right away.
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- Chris Johnson