The Steelers have brought back a familiar face to help their running game -- fullback Carey Davis, a former two-year starter who was waived during the final cut of training camp.
Davis was signed after rookie fullback Frank Summers, who developed a back problem that Coach Mike Tomlin termed "mysterious," was placed on the injured reserve list, ending his season.
Also, rookie tight end David Johnson sustained a high-ankle sprain against the Cincinnati Bengals, an injury that could keep him out for at least two weeks and possibly more.
Davis started 11 games the past two seasons with the Steelers and played in 37 games in three seasons, including six playoff games. He had 12 carries for 35 yards and caught five passes for 27 yards in 14 games last season.
Davis was cut earlier this month in favor of Summers, a fifth-round pick from UNLV.