American football is a sport played by two teams of 11 players on a 120-yard, rectangular field with goal lines on each end. The offense, or the team with control of the ball, attempts to advance the ball down the field by running or passing the ball, while the opposing team aims to stop their advance and tries to take control of the ball. The National Football League, in America, is a particularly competitive league where top athletes play. Do you tend to bet on the National Football League in America?