: Led by the quarterback , who calls plays and directs the unit. It includes the offensive line (blockers), running backs , wide receivers , and tight ends .
Teams utilize a "platoon system," switching between three specialized units: american football
American football, commonly referred to as in the United States and Canada, is a team sport played by two teams of 11 players on a rectangular field. It is the most popular sport in the United States, with professional and college football attracting millions of viewers and establishing it as a "cultural powerhouse". Core Gameplay and Objective : Led by the quarterback , who calls
: The team with the ball (offense) has four chances, known as downs , to advance the ball at least 10 yards. If successful, they earn a "first down" and another set of four downs to continue their drive. It is the most popular sport in the
: Deployed for kicking situations, such as kickoffs , punts , and field goal attempts. Major Leagues and Structures