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A comparison of American football and rugby league football can be made because of their shared origins, resulting in similarities and shared concepts in terms of scoring and advancing the ball. Aside from Canadian football, rugby league is the sport most similar to American football. Both sports involve the concept of a limited number of 'tackles'/'downs', and in both sports scoring 'touchdowns'/'tries' takes a clear precedence over goal-kicking. Generally, American football games last much longer than 80-minute rugby league matches. Because the field is reset after each tackle in American football, it is much slower paced than the more hectic rugby league, in which play stops for only as long as it takes the tackled player to get back to his feet and return the ball to play. Another major difference is that only the player with possession of the ball may be interfered with in rugby league. Defending players interfering with any other attacking player (and vice versa) will incur a penalty. Passing in the two sports also differs: while backward passing is common to both sports, in American football players are in some cases allowed to throw the ball forward whilst in rugby league forward passing is always illegal—one is only allowed to pass the ball backwards. To advance the ball downfield, a player may kick, but all offensive players must be behind the kicker if they are to be involved in the next play. If the player is in front of the kicker then he is considered offside but may continue forward providing he is not within 10m from the point where the ball lands. Once a player takes the ball and moves forward 10m the 'off-side' player may then tackle the ball-carrying player. Another obvious difference is the players' attire, with helmets, gloves and large amounts of padding around the body being the norm for American football. Comparatively little padding (if any) is used in rugby league, with a small fraction of players opting for light headgear as hard helmets are not allowed. But as can be seen by the methods of tackling and aggressive nature of American Football the practice of wearing padding is needed. ==Origins== British colonists and the British military in Canada brought football to North America. It became popular in American and Canadian universities and prep schools. At the time association football and rugby football were not as differentiated as they are now and teams would negotiate the rules before playing a game. The sports of American football and Canadian football evolved from these intercollegiate games. Meanwhile, in England a schism developed in rugby football between those who favoured strict amateurism and those who felt that players should be compensated for time taken off work to play rugby. In 1895 this resulted in the formation of a break-away sport, rugby league: the rules of the two codes of rugby (union and league) would themselves diverge over time. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Comparison of American football and rugby league」の詳細全文を読む スポンサード リンク
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