Canadian football years, and are not officially defined in the rules. However, among offensive players, the rules recognize three different types of players: Specific offensive positions include: The rules do not constrain how the defence may arrange itself (other than the requirement that they must remain one yard behind the line of scrimmage until the play starts). "Special teams" generally refers to kicking plays, which typically involve a change in possession. Canadian football Canadian football () is a sport played in Canada in which two teams of 12 players each compete for territorial control of a field of play long and wide
Comparison of Canadian football and rugby union to have good all round rugby skills as well as speed and strength. In professional rugby there are very few players who can play equally well in a variety of positions and most will play in the same position from youth. Every position in rugby has its own unique name (except for number 8) and associated skill base. In the majority of club and schoolhouse Canadian Football the majority of players play both offence and defence only being substituted for injury. Substitutes in Canadian football can return to the game at any stoppage in play. In rugby union, any player