Buffalo Bills star defensive tackle Marcell Dareus says he will enter a rehabilitation facility after violating the NFL's substance abuse policy for a second consecutive season. Dareus said he took ''careful consideration'' before announcing his plans in a statement released by the Bills on Saturday, about an hour before Buffalo hosted the New York Giants in a preseason game. General manager Doug Whaley said the team supported Dareus' decision, but he provided few other details. More...