Top 10 biggest upsets in NFL history

   In the final game before 
  [the AFL-NFL merger](http://www.nfl.com/videos/nfl-network-top-ten/09000d5d81113e47/Top-Ten-Things-that-Changed-the-Game-AFL-NFL-Merger), the 
  [Chiefs](/teams/kansascitychiefs/profile?team=KC) pulled off the upstart league's second straight upset win over the established NFL. 
   Not many believed that the 
  [Vikings](/teams/minnesotavikings/profile?team=MIN) could beat a 
  [49ers](/teams/sanfrancisco49ers/profile?team=SF) team that finished 13-2, and featured Joe Montana at his peak and a rising WR in Jerry Rice. 
   Behind backup QB Jeff Hostetler, the 
  [Giants](/teams/newyorkgiants/profile?team=NYG) put together a game plan for success against the high-flying 
  [Bills](/teams/buffalobills/profile?team=BUF) in this edge-of-your-seat thriller. 
   When replacement players were used during a strike in the 1987 season, the 
  [Redskins](/teams/washingtonredskins/profile?team=WAS)' final replacement game helped inspire a movie. 
   One year removed from their inaugural season, the expansion 
  [Jaguars](/teams/jacksonvillejaguars/profile?team=JAC) went into Mile High Stadium and shocked the football world. 
   A year after the 
  [shocking upset against the Jaguars](http://www.nfl.com/videos/nfl-network-top-ten/09000d5d8111b706/Top-Ten-Biggest-Upsets-1996-Jaguars), the 
  [Broncos](/teams/denverbroncos/profile?team=DEN) pulled off one of their own against the defending 
  [Super Bowl](http://www.nfl.com/superbowl/48) champion 
  [Packers](/teams/greenbaypackers/profile?team=GB). 
   Fresh from a move from the fledgling All-American Football Conference, the rogue 
  [Browns](/teams/clevelandbrowns/profile?team=CLE) dominated the two-time defending NFL champion 
  [Eagles](/teams/philadelphiaeagles/profile?team=PHI). 
   Before he married a supermodel and was a national icon, 
  [Tom Brady](/player/tombrady/2504211/profile) was a relative unknown leading the 
  [Patriots](/teams/newenglandpatriots/profile?team=NE) to 
  [an improbable Super Bowl win](http://www.nfl.com/videos/nfl-super-bowl/09000d5d80151d5f/Super-Bowl-Memories-Super-Bowl-XXXVI). 
   The 
  [Patriots](/teams/newenglandpatriots/profile?team=NE) steamrolled to an 18-0 record en route to 
  [Super Bowl XLII](http://www.nfl.com/gamecenter/recap?game_id=29526&displayPage=tab_recap&season=2007&week=POST21), where the 
  [Giants](/teams/newyorkgiants/profile?team=NYG) prevented New England's pro football immortality. 
   Joe Namath made a famous guarantee before 
  [Super Bowl](http://www.nfl.com/superbowl/48) III, but not many believed the AFL's 
  [Jets](/teams/newyorkjets/profile?team=NYJ) could even match up with the NFL's 
  [Colts](/teams/indianapoliscolts/profile?team=IND). 

"NFL's Top 10" is a fast-paced weekly series that provides an irreverent look at some of the most intriguing subjects in the NFL. To watch "NFL's Top 10" on NFL Network, check out the latest listings.

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