[pookha]

American football is literally a chess match. It's an orchestarted sport where scheme's are major components of the game. bill belichick (coach for New England) invented a type of coverage (pattern-match) that took professional football coordinators 20 years to understand but once they did it altered how the game is played and took away sections of the field. Once you understand what they're doing Football is an incredibly complex sport compared to Basketball, Hockey and Soccer (pure sports).