Warren and Rico Dowdle split first-team running back reps across the Steelers' first two training camp practices, Daniel Chavkin of SportsNet Pittsburgh reports.
Warren worked ahead of Dowdle on Wednesday but was the second running back up Thursday. While Warren remains the incumbent in this backfield and holds a steady role in the receiving game, Dowdle's arrival and familiarity with new head coach Mike McCarthy make this a murky situation. Warren's upside will depend on whether he can separate enough to avoid a full committee, and whether he or Dowdle gets distinct priority on early downs and near the goal line.