New York Giants – 2008
Somehow the 9-6-1 Eagles made it to the Divisional Round in 2009. They faced the reigning Super Bowl champion Giants and nobody gave them a shout. Analysts expected the Giants to roll through them before facing sterner tests. But instead, they became a one-and-done team and disappointed their fans.

It’s not the worst Super Bowl defense ever because at least they made the playoffs. But they blew most of their third-down opportunities and missed crucial kicks. This was a very bad day at the office for the Giants and Philly made them pay a heavy price for that (via Reuters).