Iowa State quarterback Sam Richardson sprained ankle is better

Iowa State quarterback Sam Richardson is getting his mobility back, but still isn't completely recovered from a nagging right ankle injury.

Coach Paul Rhoads says that while Richardson is moving better in practice, the injury might be something that nags him throughout the season.

Richardson sprained the ankle in Iowa State's season-opening loss to Northern Iowa on Aug. 31 and was limited in the Cyclones' loss to Iowa nine days ago.

Richardson, who also has been bothered by a groin problem, says he's 85 to 90 percent healthy.

If Richardson is still hampered in Thursday night's game at Tulsa, Rhoads says backup Grant Rohach is ready to take over.