Warren rushed three times for 11 yards and wasn't targeted in Friday's 20-12 preseason loss to the Texans.
Warren and Najee Harris, who had 25 yards on four touches, both saw time with the first-team offense in the first quarter. The two running backs were in a timeshare last season and will likely continue to split playing time under new offensive coordinator Arthur Smith. The Steelers' Aug. 17 preseason game against the Bills offers another opportunity for Warren and Harris to familiarize themselves with Smith's scheme.