Thursday July 31st, 2014

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.

More: For Oklahoma QB Trevor Knight, success lies in keeping things simple​

- Chris Johnson

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.