Too many men with too many players on the court. Under no circumstance can any player or coach be ejected on a technical foul caused by too many players. In gridiron football, if a team has more than the allowed number of players on the field during a play (eleven in America, twelve in Canada), the offending team is penalized five (American) or ten (Canadian) yards for "too many men on the field" (also called "twelve/thirteen men on the field"). This is usually the result of an improper substitution. The 2009 Grey Cup game in the CFL was decided on a too-many-men call.
Comparison of Canadian football and rugby union running backs, receivers, and quarterbacks have roles similar to backs in rugby. Because of the playing time, number of pauses, number of players and the nature of the game in general, rugby players will typically need higher physical endurance than Canadian football players while more short-term bursts of physical strength, power, and speed are required in Canadian football (amongst equivalent positions and weights). Collisions between players in rugby union tend to last significantly longer than Canadian football, in which collisions are more often "hits" in which the momentum of the player is enough to bring the other player to ground