American football
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American football, referred to simply as football in the United States and Canada and also known as gridiron football, is a team sport played by two teams of eleven players on a rectangular field with
Larry Fitzgerald (in blue) catches a pass while Cortland Finnegan (in red) plays defense at the 2009 Pro Bowl.
Walter Camp, the "Father of American Football", in 1878 when Camp was captain of Yale University's football team
The dangers associated with the sport depicted in a 1908 cartoon by William Charles Morris
A quarterback for the Kiel Baltic Hurricanes in Germany under center and ready to take the snap
Gridiron football
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Gridiron football is a family of team sports derived from rugby football primarily played in the United States and Canada.
American football
…American football, referred to simply as football in the United States and Canada and also known as gridiron football, is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense, the team with possession of the…
A 1904 diagram of an American football field. In this period, lines were painted along the length of the field as well as the width, making a grid pattern.
Commonwealth Stadium in Edmonton, with a Canadian Football League game in progress