Football Paint T-Shirt

American football, known in the United States as football, is a sport played by two teams of eleven players on a rectangular field 120 yards long by 53.3 yards wide with goalposts at each end. The offence attempts to advance an oval ball down the field by running with or passing it. They must advance it at least ten yards in four downs to receive a new set of four downs and continue the drive; if not, they turn over the ball to the opposing team. Points are scored by advancing the ball into the end zone for a touchdown, kicking the ball through the opponent's goalposts for a field goal or by the defence tackling the ball carrier in the offence's end zone for a safety. American football evolved from rugby and association football. The first game was played on November 6, 1869. A set of rule changes drawn up from 1880 onward by Walter Camp established the snap, eleven-player teams and downs. Later rule changes legalised the forward pass, created the neutral zone and specified the width of the football. American football is the most popular sport in the United States and the National Football League's championship game, the Super Bowl, is among the most-watched sporting events in the world.