Oklahoma running back Samaje Perine (32) dives into the end zone in front of Kansas State defensive back Dante Barnett (22) for a touchdown in the first quarter of an NCAA college football game in Norman, Okla., Saturday, Oct. 15, 2016. (AP Photo/Sue Ogrocki)
Alabama running back Derrick Henry (2) outruns Clemson defensive back Jayron Kearse (1) for a touchdown during Alabama's College Football Playoff National Championship football game with Clemson, Monday, Jan. 11, 2016, at University of Phoenix Stadium in Glendale, Ariz.
Greg Cosell's NFL Draft preview: Running backs highlight Day 2 and 3 sleepers
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Alabama running back T.J. Yeldon (4) recovers a fumbled ball as Missouri defensive lineman Shane Ray (56) looks on during the first half of the Southeastern Conference championship NCAA college football game, Saturday, Dec. 6, 2014, in Atlanta. (AP Photo/Brynn Anderson)
Rudolph powers Oklahoma State past No. 10 West Virginia
Oklahoma State running back Barry J Sanders (26) works to free himself from the grasp of West Virginia safety Marvin Gross Jr., during the first half of an NCAA college football game in Stillwater, Okla., Saturday, Oct. 29, 2016.
Washington State running back James Williams (32) is tackled by defensive back Budda Baker, left, and linebacker Psalm Wooching, center, in the first half of an NCAA college football game, Friday, Nov. 25, 2016, in Pullman, Wash. (AP Photo/Ted S. Warren)
Washington running back Myles Gaskin, left, powers past Stanford safety Justin Reid, right, for a touchdown in the second half of an NCAA college football game, Friday, Sept. 30, 2016, in Seattle. (AP Photo/Ted S. Warren)
Mississippi State running back Josh Robinson (13) gets past Kentucky cornerback Fred Tiller, left, to make it to the end zone for his team's first touchdown in the first half of an NCAA college football game at Commonwealth Stadium in Lexington, Ky., Saturday, Oct. 25, 2014