12. Iowa State vs. Oklahoma State (2011)
The Cyclones blew the Cowboys away in 2011 in double overtime and shook up the BCS. Oklahoma State was the No. 2-ranked team in the country. Meanwhile, Iowa didn’t even have a ranking next to their names. They also came into the game with an average 5-4 record and were 27-point underdogs (via SBNation).
This was the game that changed the postseason because of Iowa State’s success. They won the game 37-32 after Cowboys kicker Quinn Sharp missed a chance to win the game. It was one of the most controversial moments of the college season yet gloriously entertaining.