History of rugby union in the United States goal from mark. The scoring systems have evolved in parallel, with both rugby union and American football offering three points for a kicked goal and seven points for a ball run into the end zone and a successfully kicked conversion. One factor aiding in rugby's growth in the early 1900s was American football's crisis of 1905–06, with President Teddy Roosevelt engaging in a debate about the future of American football in response to the perception that American football was a violent sport. The growth of rugby in the United States and particularly in California was aided by the 1905 New
Goal difference Goal difference Goal difference or points difference is a form of tiebreaker used to rank sport teams which finish on equal points in a league competition. Either "goal difference" or "points difference" is used, depending on whether matches are scored by goals (as in ice hockey and association football) or by points (as in rugby union and basketball). Goal difference (or points difference) is calculated as the number of goals (or points) scored in all league matches minus the number of goals or points conceded. Goal difference was first introduced as a tiebreaker in association football, at the 1970 FIFA