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Association football, commonly known as football, or soccer, is a team sport played between two teams of 11 players each, who primarily use their feet to propel a ball around a rectangular field called a pitch.
Association football is a sport played between two teams. In the United States, Canada and Australia, it is called soccer. In most other English-speaking countries it is called football. Association football is the most popular sport in the world.
Regulation size and weight for a football is a circumference of 68–70 cm (27–28 in) and a weight of between 410–450 g (14–16 oz). The ball is inflated to a pressure of 0.6–1.1 bars (8.7–16.0 psi) at sea level. [20] This is known as "Size 5". Smaller balls, sizes 1, 3 and 4 are also produced for younger players or as training tools.
