Biggest upsets in sports history are the moments that remind us why we watch. When a heavy underdog topples a dominant favorite, the result becomes legend. From a college basketball stunner to a Cold War miracle, these games prove that nothing is decided on paper. Fans still talk about them decades later.
The Miracle on Ice: The Ultimate Underdog Triumph
No list of the biggest upsets in sports history is complete without the 1980 U.S. Olympic hockey team. The Soviet Union had the best squad in the world, and everyone knew it. Coach Herb Brooks led a scrappy group of young Americans to a 4–3 semifinal win in Lake Placid. Team USA then finished the job with a gold medal days later. Set against the Cold War, it became a lasting source of national pride.
Super Bowl Shockers That Changed the NFL
The NFL has produced some of the greatest sports upsets ever seen. In Super Bowl III, the New York Jets beat the Baltimore Colts 16–7 after Joe Namath guaranteed victory. That win proved the AFL belonged. In Super Bowl XLII, Eli Manning and the Giants ended New England’s bid for a 19–0 season with the famous David Tyree helmet catch and a late Plaxico Burress touchdown. In Super Bowl XXXVI, the 14-point underdog Patriots stunned the Rams on a last-second Adam Vinatieri field goal. Even Nick Foles and the Eagles upset Tom Brady’s Patriots in Super Bowl LII.
Fans who love Patriots history can also read our look at the greatest New England Patriots players in NFL history and revisit Tom Brady’s connection to Vinatieri and the Hall of Fame.
March Madness Miracles and College Stunners
College sports deliver the biggest upsets in sports history nearly every year. In 2023, 16th-seeded Fairleigh Dickinson, the smallest team in Division I, beat No. 1 seed Purdue and its 7’4″ center, Zach Edey. UMBC became the first men’s 16-seed to beat a No. 1 when it crushed Virginia 74–54 in 2018. Harvard’s women did it first, beating Stanford in 1998.
On the gridiron, Appalachian State shocked Michigan 34–32 in 2007 on a blocked field goal. Howard became the biggest point-spread underdog winner in football history when it beat UNLV as a 45-point underdog in 2017. Texas also stopped USC in the 2006 national title game, thanks to Vince Young.
Baseball, Hockey, and Golf: Giant-Killers Across Sports
These biggest upsets in sports history are not limited to one sport. Bill Mazeroski’s Game 7 walk-off homer gave the 1960 Pirates a World Series win over the Yankees. Kirk Gibson’s injured, game-winning swing sparked the 1988 Dodgers past the powerful A’s. In 2023, the Florida Panthers eliminated the Boston Bruins, who had set an NHL record with 65 wins. In golf, 20-year-old amateur Francis Ouimet beat Harry Vardon and Ted Ray at the 1913 U.S. Open, and Y.E. Yang outlasted Tiger Woods at the 2009 PGA Championship.
If you enjoy iconic moments, check out the greatest Olympic moments of all time and the list of LeBron James records that could stand for generations.
Why Upsets Matter
The biggest upsets in sports history work because they break our expectations. Favorites carry pressure, while underdogs play free. Each stunning result keeps fans watching, since any game could become the next legend. These biggest upsets in sports history also show that preparation, belief, and one big moment can beat talent and budgets.
FAQs
What is the biggest upset in sports history?
Many fans and writers point to the 1980 “Miracle on Ice,” when the U.S. Olympic hockey team beat the Soviet Union 4–3.
What is the biggest upset in March Madness?
Fairleigh Dickinson’s 2023 win over Purdue is often ranked the biggest, since it was a 16-seed in a game that most metrics called historic.
What was the biggest Super Bowl upset?
Super Bowl III, when the Jets beat the Colts after Joe Namath’s guarantee, is widely seen as the most famous, though the Giants over the 18–0 Patriots is also a top contender.
Why do upsets happen so often in sports?
Sports depend on human performance, momentum, injuries, and pressure, so even a heavy favorite can lose on any given day.