St. Louis Rams – 2002
The Greatest Show on Earth became a laughingstock in 2002 after Kurt Warner broke his finger. They entered the new season as the favorites to win the Super Bowl title after they fell short to a young Tom Brady and the Patriots in their previous campaign. But everything fell apart after Warner’s injury as the team went 0-5.

It’s safe to say that this wasn’t the start to the year that their fans expected. They came back and won five games on the bounce but it was too late. Their 7-9 record wasn’t good enough for them to make the postseason as their Super Bowl defense ended with a whimper (via Deseret News).