Kevin Kolb won't be playing quarterback for Arizona on Sunday against the Vikings at the Metrodome.
In fact, he probably won't be playing for a while.
Various reports say Kolb suffered a serious rib injury against Buffalo last Sunday and could be out six weeks or so.
John Skelton will start on Sunday.
ESPN's Adam Schefter reported that Kolb had "multiple" ribs detached from the sternum and would miss several weeks.
