Comparison of Canadian football and rugby union "rouge" and the receiving team gains possession of the ball but give up a point to the punting team for failing to advance the ball out of the endzone. An important difference between the two sports involves the aftermath of a score. In Canadian football, the scoring team kicks off, except after a safety. In rugby union, the team scored upon kicks off (in rugby sevens, a variant of rugby union featuring seven players per side, the scoring team kicks off). Canadian teams have twelve players on the field per side. Different players may be interchanged at will for offence
Comparison of Canadian football and rugby union substituted off for any reason except for minor bleeding is not allowed to return to the game (with the possible exception of front-row forwards). Rugby teams may make up to eight substitutions. There are fifteen players on the pitch at all times. Players who are verified as bleeding by an independent medical official are sent to the "blood bin," where they can receive medical treatment, and replaced until they have stopped bleeding. Ejected players in Canadian football can be replaced with a substitute, while in rugby union ejection means the team must play a man down the remainder of the