The Bengals placed DT Renell Wren on the Reserve/Injured list, and activated WR John Ross from the Reserve list.
Wren, a second-year player, suffered a right quad injury in practice on Aug. 17. He played in 11 games (two starts) as a rookie last season and recorded eight tackles.
Ross, a fourth-year player, had been placed on the Reserve list on Aug. 12.
