The college football world changed dramatically when the Bowl Championship Series was formed 20 years ago, giving the sport a definitive championship game for the first time. To celebrate 20 years of championship games, ESPN Analytics calculated overall, offensive and defensive ratings to find the true strength of a champion through a comparison of top college football programs across seasons. The model includes a giant network of all FBS college football teams that played approximately 15,000 games over 20 years and assigns each team to a game, score, and home field advantage indicator within each season. The network establishes a team's strength interrelated with every other team in the network and returns a rating measured in points above the average team (zero rating).
Vince Young-led Texas the best team of the past 20 years
