The Steelers offensive line has been a mash unit through week 1. Zach Banner is out for the Season. David DeCastro missed practice today and has been ruled out against the Broncos on Sunday. Now Stefen Wisniewski has been placed on IR. Tackle Derwin Grey has been promoted from the practice squad to the 53 man roster. Chuks Okorafor and Kevin Dotson could get the start against the Broncos on Sunday. Tom Pelissero from the NFL Network has reported Stefen Wisniewski does not require surgery on his pectoral injury. He should be able to return this season. The earliest Wisniewski can return from IR is in three weeks against the Eagles on October 1st.