Sports betting football fans love an underdog, and there are plenty to choose from in the updated odds for Super Bowl XLVI. There are a few teams that could surprise the league in 2011, and their long-shot odds make them a tempting bet.

Detroit Lions (Super Bowl XLVI Odds: 25 to 1)

Considering how awful the Lions have played over the past three or four years, odds of 25 to 1 are not that bad. But the betting experts see the same potential in the Lions that the fans do. If you are looking for something that is as close to a long-shot lock for Super Bowl XLVI odds, then the Lions are your team.

Seattle Seahawks (Super Bowl XLVI Odds: 80 to 1)

Online casino football fans were wondering what kinds of off-season changes the Seattle Seahawks would make to improve their team. The additions of wide receiver Sidney Rice and quarterback Tavaris Jackson can be considered upgrades to an offense that needed some flair. The drafting of rookie offensive lineman James Carpenter in the first round shows that Seattle has identified its issues and is looking to fix them.

Cincinnati Bengals (Super Bowl XLVI Odds: 100 to 1)

This is the ultimate long-shot Super Bowl bet, but it is interesting to consider. The Bengals just signed quarterback Bruce Gradkowski and got their first round draft pick wide receiver A.J. Green under contract. Is the Cincinnati defense good enough to compete for the AFC title? Maybe not, but stranger things have happened.