Patriots venture into unknown at tailback

Not even the great Tom Brady can throw 70 times per game. At some point, the New England Patriots must rely on their running game this season to complement their future Hall of Fame quarterback and high-powered passing attack. But who is ready to carry to load for the Patriots? That is a question the defending AFC champions are not ready to answer. Consider New England's ground attack a journey into the unknown. Its running back roster reads like a waiver wire scrap heap in fantasy football: Joseph Addai, Danny Woodhead, Stevan Ridley and Shane Vereen.