The most unexpanded method of scoring in this American game is safety. However, since 1932 it was not a rare occurrence in this kind of sport: this method has occurred once every 14.31 games in the National Football League (NFL). In other words, its occurrence was about once a week under current scheduling rules.

One of the ways safeties can be scored is when a ball carrier is tackled in his own end zone. Another way to score them is when a penalty is committed by the offense in their own end zone.

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