Football. Monday , April 16th , 2018 - 03:28:38 AM
Failure to advance the ball the required distance within those three downs would result in control of the ball being forfeited to the other team. This change effectively made American football a separate sport from rugby, and the resulting five-yard lines added to the field to measure distances made it resemble a gridiron in appearance.
American football as a whole is the most popular sport in the United States. The most popular forms of the game are professional and college football, with the other major levels being high school and youth football.
The rival American Football League arose in 1960 and challenged the NFL's dominance. The AFL began in relative obscurity but eventually thrived, with an initial television contract with the ABC network. The AFL's existence forced the conservative NFL to expand to Dallas and Minnesota in an attempt to destroy the new league.
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