Injuries on the Bills' offensive line have caused a major reshuffling of the front five, but don't expect a drop-off in play. Both C Geoff Hangartner, who started the team's first 12 games, and Kraig Urbik, who has played both center and guard this season, have knee injuries that will force them to miss time; Urbik's was so severe that he was placed on I.R. That means Eric Wood, the starter at right guard from opening day through Week 11 before he went down with an ankle sprain, moves to center, and Cordaro Howard steps in at right guard. The new unit — including regular starters Demetrius Bell at left tackle, OLG Andy Levitre and ORT Mansfield Wrotto — should be able to continue the solid play the line has shown so far this season. One thing this line won't have, with the recent rash of injuries, is much depth, a concern for this makeshift group over the season's final few weeks.