The NFL is still seeking an audience with the four linebackers it's investigating for an alleged link to performance-enhancing drugs. The league's latest message to James Harrison, Clay Matthews, Mike Neal and Julius Peppers came with an ominous and onerous threat: Answer our questions in the next 10 days, or start your suspension. NFL senior vice president of labor policy and league affairs Adolpho Birch sent a letter Monday to the NFL Players Association detailing a plan to suspend Harrison, Matthews, Peppers and Neal if they don't speak with the league by Aug. 25. More...