Samuel’s Missed Interception
The Giants stunned the Patriots and the rest of the NFL world in 2008. This was one of the biggest upsets in history because New England had a perfect regular season record. Most analysts predicted that the Giants would struggle to make the postseason after Tiki Barber’s retirement. But they belied expectations and fought their way to immortality (via Sports Illustrated).

Everybody knows about the ‘Helmet Catch’ but it should never have happened. In the previous play, Eli Manning misplaced a pass and the ball drifted toward Asante Samuel. But the Patriots’ star inexplicably fumbled an easy catch. It was one of the worst Super Bowl mistakes ever because David Tyree’s iconic moment came immediately after.