In 2016, Mike Weber was the freshman running back that all of Buckeye Nation was salivating over. Then, in 2017, that honor went to J.K. Dobbins, following a Weber injury kept him out early in the season. Then, even after Weber returned healthy, with the Buckeyes blowing out opponents for much of the fall, Antonio Williams had enough opportunities to prove that he was a viable option in the backfield as well.
There is also the case of the disappearance of Demario McCall, who showed tremendous explosion and creativity in 2016, but has become an afterthought due to injuries and a crowded RB room ever since.