Football is a competitive team sport played mainly in the US. The object of the game is to score points by advancing the football towards the opposing team’s end zone.

The highest quality of professional football is played in the NFL.

Since the 1960s, football has outranked baseball as the most popular spectator sport in the United States.

The Green Bay Packers won both Super Bowl I and II.

The NFL also operates a developmental league, NFL Europe, with teams in five German cities, and one in the Netherlands.

American football is played on a rectangular field 120 yards (110 k) long by 53? yards (49 meters) wide. The longer boundary lines are sidelines, while the shorter boundary lines are end lines. Near each end of the field is a goal line; they are 100 yards apart. A scoring area called an end zone extends 10 yards beyond each goal line to each end line.

Football games consist of four 15 minute quarters.

Advancing the ball in American football resembles the six-tackle rule and the play-the-ball in rugby league football. The team that takes possession of the ball (the offense) has four attempts, called downs, to advance the ball 10 yards towards their opponent’s (the defense’s) end zone. When the offense gains 10 yards, it gets a first down, or another set of four downs to gain 10 yards.