Canadian football

Canadian football is a form of football in which two teams of twelve players each compete for territorial control of a field of play 110 yards (100.6 m) long and 65 yards (59.5 m) wide, with end zones 20 yards (18.3 m) deep. At each goal line is a set of forty-foot (12.2 m) high goalposts, which consist of two uprights joined by a crossbar 18.5 feet (5.6 m) long which is ten feet (3.1 m) above the goal line. The goalposts may be H-shaped (both posts fixed in the ground) although in the higher-calibre competitions the tuning-fork design (supported by a single curved post behind the goal line, so that each post starts ten feet (3.1 m) above the ground) is preferred. The sides of the field are marked by white sidelines, the goal line is marked in white, and white lines are drawn laterally across the field every 5 yards (4.6 m) from the goal line.

Canadian football shares origins with American football, and the two are closely related. There are, however, significant differences: see comparison of Canadian and American football.