Freshman running back Roy Finch could miss the first half of the season for No. 7 Oklahoma with an ankle injury.
Adrian Peterson sat out Oklahoma's practice Monday because of a right ankle injury,
Oklahoma put together its best offensive performance of the season in a 43-21 win over Kansas State, but lost Adrian Peterson in the first half to an apparent foot injury.
Leading rusher Damien Williams and starting left tackle Lane Johnson missed practice Monday for Oklahoma (No. 12 BCS, No. 14 AP) with ankle injuries, but coach Bob Stoops is holding out hope they'll be able to play Saturday at Iowa State.
Wisconsin's Anthony Davis was limited to just 116 carries as a junior in 2003 due to ankle injuries.