... Week 1 the Seattle Seahawks stunned the football world by trouncing the San Francisco 49ers. In Week 2 it was the Chicago Bears pulling off the monumental upset and dropping the Dallas Cowboys in Dallas stadium. Just last week St. Louis and quarterback Sam Bradford, as three-point underdogs, rammed the Redskins for their first win of the season.

So what team will shock football fans this week?

Here are five underdogs that have a chance to take a bite out of favorites this week and five tips on identifying underdogs during the NFL season.

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