Ohio State hires Jim Knowles: Buckeyes nab Oklahoma State defensive coordinator to turn around struggling unit | CBS Sports Headlines Ohio State hires Jim Knowles: Buckeyes nab Oklahoma State defensive coordinator to turn around struggling unit Knowles produced success with his units as Oklahoma State’s defensive coordinator from 2018-21 ESN … Continue reading Ohio State hires Jim Knowles: Buckeyes nab Oklahoma State defensive coordinator to turn around struggling unit