The true agony and ecstasy of sports fandom are on display as Bills Mafia heads to Jacksonville and Denver for high-stakes playoff games.

For Bills Mafia, each season provides a new chance at redemption.

Bills Mafia proves nothing has the power to unite people from different backgrounds more than sports.

"It's not just about jumping through tables." How Bills Mafia also became the sports world's most charitable fanbase.

How Bills Mafia became known as the most passionate fanbase in professional sports.