Warren ran for seven yards on three carries and drew one target in a 23-20 overtime win over the Bengals on Sunday.
Starter Najee Harris left the game after suffering a foot injury in the fourth quarter, which could portend a serious issue given how close the game was at the time. If Harris remains sidelined for the Week 2 matchup against the Patriots, Warren may be in line for a spot start. The undrafted rookie from Oklahoma State was decisively ahead of fourth-year back Benny Snell in Sunday's pecking order, as the latter was active but saw no touches after Harris' exit.