Top 10 biggest upsets in NFL history

Super Bowl IV

   In the final game before 
  the AFL-NFL merger, the 
  Chiefs pulled off the upstart league's second straight upset win over the established NFL. 

Watch clip | Super Bowl IV highlights | AFL anniversary celebration

Vikings upset 49ers in 1987 playoffs

   Not many believed that the 
  Vikings could beat a 
  49ers team that finished 13-2, and featured Joe Montana at his peak and a rising WR in Jerry Rice. 

Watch clip | 1987 standings | Vikings history | More from Vikings.com

Super Bowl XXV

   Behind backup QB Jeff Hostetler, the 
  Giants put together a game plan for success against the high-flying 
  Bills in this edge-of-your-seat thriller. 

Watch clip | Super Bowl XXV highlights | Hostetler in college

Redskins' scabs beat 'America's Team'

   When replacement players were used during a strike in the 1987 season, the 
  Redskins' final replacement game helped inspire a movie. 

Watch clip | Darrell Green on rivalry | Recalling coach Gibbs

Jaguars upset Broncos in 1996 playoffs

   One year removed from their inaugural season, the expansion 
  Jaguars went into Mile High Stadium and shocked the football world. 

Watch clip | 1996 standings | Jaguars history | Mile High memories

Super Bowl XXXII

   A year after the 
  shocking upset against the Jaguars, the 
  Broncos pulled off one of their own against the defending 
  Super Bowl champion 
  Packers. 

Watch clip | Super Bowl XXXII highlights | '97 Broncos' potent offense

Browns upset Eagles in 1950 opener

   Fresh from a move from the fledgling All-American Football Conference, the rogue 
  Browns dominated the two-time defending NFL champion 
  Eagles. 

Watch clip | Paul Brown changes the game | Browns history | The AAFC

Super Bowl XXXVI

   Before he married a supermodel and was a national icon, 
  Tom Brady was a relative unknown leading the 
  Patriots to 
  an improbable Super Bowl win. 

Watch clip | Brady vs. Bledsoe | Brady's humble NFL start

Super Bowl XLII

   The 
  Patriots steamrolled to an 18-0 record en route to 
  Super Bowl XLII, where the 
  Giants prevented New England's pro football immortality. 

Watch clip | Super Bowl XLII highlights | Can't-miss plays: SB XLII

Super Bowl III

   Joe Namath made a famous guarantee before 
  Super Bowl III, but not many believed the AFL's 
  Jets could even match up with the NFL's 
  Colts. 

Watch clip | Super Bowl III highlights | 'The Magic Bean' | AFL's 50th

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