STILLWATER — With a simple Twitter post, Oklahoma State's Mike Gundy announced six new coaches to his staff, including defensive coordinator Jim Knowles and former OSU defensive end Greg Richmond.
Knowles comes to Oklahoma State from Duke, where he was serving as assistant head coach to David Cutcliffe, as well as defensive coordinator and linebackers coach.
He replaces Glenn Spencer, the OSU defensive coordinator and linebackers coach who was let go on Jan. 11.
Knowles has been a respected defensive coach on the East Coast going back to his time as an assistant and then head coach at his alma mater, Cornell, where he graduated in 1987.