13. Dallas Cowboys vs. Seattle Seahawks
Tony Romo is notorious for costing his team in the playoffs. This moment from the 2007 NFC wildcard game is definitely his most memorable because it cost his team. In short, the Cowboys were a field kick away from the next round of the playoffs. Then the incredible happened.
Romo was the holder for the kick when he inconceivably fumbled the snap. He got tackled from behind and that was it. The Seahawks managed to hold out for a miracle win. It just goes to show that a team can play well but an individual meltdown can cost you everything.