The Dallas Cowboys have one of the most explosive running backs in the league in Tony Pollard. This year will mark the first year the young back will be given the keys to the backfield and take on the lead running back role after the departure of Ezekiel Elliott. It’s a role fans are excited about going forward, but it’s also one that brings about some trepidation. Pollard has never been a bellcow running back. Overextending him could be costly, and it would behoove the Cowboys to have another back sharing the workload, but who is that back?