Oklahoma's Joe Mixon not attending team activities after alleged assault

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