Association football, more commonly known as football or soccer, is a sport played between two teams of eleven players with a spherical ball. It is played by 250 million players in over 150 countries, making it the world's most popular sport. The game is played on a rectangular field with a goal at each end. The object of the game is to score by getting the ball into the opposing goal. The goalkeepers are the only players allowed to touch the ball with their hands or arms while it is in play and