According to Dale Lolley of DK Pittsburgh Sports, RB Jaylen Warren, an undrafted rookie out of Oklahoma State, is expected to be the Pittsburgh Steelers' RB2 behind RB Najee Harris, supplanting Benny Snell. (Dale Lolley on Twitter)
Harris hasn't shown much concern for injury risk and the Steelers weren't too interested in using multiple RBs, only giving 36 carries to their RB2 last season, Snell. However, with an expected massive workload for Harris as Pittsburgh's bell-cow back, Warren becomes someone to keep on every manager's radar as a handcuff and should be rostered in deep leagues. Warren is essentially going undrafted in fantasy drafts right now.