American football, or American football, is a kind of rugby, the most popular sport in America and the first of the four major professional sports in North America.
American football originated from soccer. After it was introduced to the United States, the rules were changed to take turns to fight for the ball on the offensive and defensive lines, and there was no restriction on movement, so it could be thrown forward. The purpose of this sport is to push the ball to the opponent's end zone to score points. There are many ways to score, including holding the ball across the baseline, throwing the ball to a teammate behind the baseline, or kicking the ball directly on the ground between two goalposts. At the end of the game, the team that scored more points won. American football is a highly antagonistic contact sport. Because there is often a strong physical collision with the opposing players in the game, players need to wear helmets and protective gear.
Football, with the reputation of "the first sport in the world", is the most influential single sport in the world. In a standard football match, the two teams each send 10 players and 1 goalkeeper, * * *1/people to fight and attack on a rectangular grass court. The purpose of the game is to shoot the football into the opponent's goal as much as possible, and you can get one point for each goal. When the game is over, the team with the most points wins. If the score is the same within the specified time, it depends on the rules of the game. You can draw lots, play overtime or shoot each other (12 steps) to score. In the football match, except the goalkeeper can touch the ball with his hand in his own restricted area, each player can only control the football with other parts of his body except his hand (except the foul ball).