Coaches, players confused by implementation of helmet rule

EAGAN, Minn. -- Concerns over the implementation of the NFL's new helmet rule continue to mount through the preseason and have drawn frustration and concern from players and coaches alike. The new rule, which penalizes offensive and defensive players for lowering their head to initiate contact with their helmet to any part of an opposing player's body, was designed to make the game safer. How it's being enforced by officials in the preseason is generating stark controversy. Some, including Minne...