In American Football, the 120 top US-college teams each play a season of roughly 15 games against some geographically close opponents. Given the outcomes of all these games, determine the top two teams that deserve to play in the national college super bowl.
The standard way of ranking teams based first on number of wins and then on goal difference might work rather poorly in this case, because not a full Round
Robin has been played. Also, this system does not take into account the strengths of the opponents. Sport rating systems analyze the results of sports competitions to provide objective ratings for each team.