Coach Chan Gailey said that NT Torell Troup (back) might end up on injured reserve. Troup has appeared in just six games as a rotational player this year due to ongoing problems with his back. The 2010 second-round pick was expected to play a major role after the Bills lost Kyle Williams for the season. "Torell's back acted up Saturday night and then it really locked up Sunday morning," Gailey said Monday.