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How does American football differ from rugby?
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American football
Philadelphia Eagles quarterback Jalen Hurts during Super Bowl LVII, 2023; the team lost to the Kansas City Chiefs.
American football evolved from English rugby, but it developed into a distinct sport through several fundamental rule changes initiated by Walter Camp and others.123
Key differences include:
- Possession and Play: Unlike rugby, where play is continuous, American football features alternating possessions. It replaced the rugby "scrum" with a "scrimmage," where one team is awarded possession of the ball to initiate a play.123
- Downs System: American football requires a team to advance the ball a specific distance within a set number of "downs" (attempts) or surrender possession, a rule created to prevent teams from holding the ball indefinitely.2
- Team Size: American football is played with 11 players per side, whereas rugby traditionally utilizes 15.1
- Equipment: Due to the nature of the contact, American football players wear extensive padding and helmets for protection, while such equipment is generally restricted or discouraged in rugby.4
- Strategic Roles: American football introduced specialized positions, such as the quarterback, and relies on a highly structured, intricate system of signals and set plays.12