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Power 5 Power Rankings: Big 12
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Oklahoma will take the field Thursday against Iowa State without running back Joe Mixon, suspended for a violation of team rules.
"OU sets very high standards and they must be met by all of our student-athletes," Bob Stoops said in an official statement.
Mixon is the team's top rusher with 813 yards and has been one of the most dangerous all-purpose threats in the Big 12 this season.