The Vikings' offensive struggles stem very much from injuries, and they particularly miss Peterson. The three-time NFL rushing champion and five-time first-team All-Pro has been out since tearing his meniscus in a Week 2 victory over Green Bay. The Vikings' 72.4-yard average per game rushing is down from last season when they ranked No. 4 in the NFL at 138.2 yards per game. The Vikings also have been hampered by a slew of injuries along the offensive line. Starting tackles Matt Kalil and Andre Smith have been on injured reserve since the first month of the season and the Vikings have used six tackles this season. "We've had to do some shuffling up there just with some of the injuries that have occurred throughout the year, but I think our guys have done a great job," Bradford said. "Obviously it's difficult when you're asking [a player] to play on the left side and the next week you're asking him to play guard and then the next week you're asking him to play on the right side. I don't think that's easy for anyone, but I think those guys have done a great job up front."