The Steelers signed S Trenton Thompson to the active roster from the practice squad and placed S Elijah Riley on injured reserve. - SeatGeek Code: STEELERSUPDATE Use code to get $20 off your first purchase! teamseatgeek - #herewego #steelers #steelernation #nfl #steelersfootball #steelbees #steelersupdate #steelersupdatecom #benroethlisberger #discussion #tjwatt #minkahfitzpatrick #najeeharris #kennypickett #bigben #georgepickens #pittsburgh