The Lions' win on Sunday broke some of the basic rules of the big NFL upset.
First Rule of Big NFL Upsets: The big underdog should not lose the turnover battle.
After the Lions' win, double-digit underdogs have won 19 times since 2010. Sunday's game marked just the second time that a team pulled the big upset despite having more turnovers than takeaways.
Second Rule of Big NFL Upsets: The big favorite should not get 19 lives at the end of the game.
The game appeared to be over after a Lions' touchdown to make it 18-10 inside the two-minute warning.