staff/digital file
ORG XMIT: S12956818 Undated.. Sooners Billy Sims (20)
Earlier this year, Oklahoma was ranked the best NFL factory in the nation for running backs by ESPN -- and with good reason.
The Sooners currently have six RBs on NFL rosters after Joe Mixon and Samaje Perine were selected in the 2017 NFL Draft. Furthermore, three of OU's five Heisman winners came out of the backfield -- Billy Vessels, Steve Owens and Billy Sims.
With so much talent to choose from, let's take a look at the five greatest RBs in the history of Oklahoma football.