WR Deon Butler was signed to the roster to fill Charly Martin's role as the fifth wide receiver on the active roster, but he's been listed as inactive for the game. And as expected, Walter Thurmond has joined Marcus Trufant as an injury scratch on the sideline along with CB DeShawn Shead. The four cornerbacks who will be active for the game are Richard Sherman, Jeremy Lane, Byron Maxwell, and Ron Parker.
Lane will get the start opposite Sherman, but he and Maxwell are slated to share duties at the right cornerback and nickel back positions, so don't start worrying that there's been another injury to a CB if at some point you see Maxwell's #41 on the field but not Lane's #20. Parker played in two games for the Seahawks last year before suffering an injury that landed him on injured reserve, but in that brief span he looked like a rather promising addition on special teams — and unless someone else gets hurt, that's the only time he'll see the field today.
The biggest news for the Bills is that starting cornerback and star return man Leodis McKelvin is inactive for the game with a groin injury. Aside from C.J. Spiller's running, McKelvin's heroics as a punt retuner have been one of the few bright spots for them this year. Without him on the field, this gets a lot harder for Buffalo to win.