A chronological compilation of the most shocking and historic upsets in major tennis tournaments, where unseeded players or those ranked outside the top 100 defeated established champions. These matches redefine the unpredictability of the sport and highlight the mental fortitude required to overcome overwhelming odds on the biggest stages.
Get targeted exposure with custom position pinning and highlighted placement.
Entering with a ranking of 84, Pervak shocked the tennis world by defeating the second seed Venus Williams in the fourth round. This victory marked one of the earliest significant underdog stories of the Open Era, showcasing Pervak's aggressive baseline game against a Grand Slam champion.
Edmondson, ranked 70th in the world, defeated the top seed and future legend Ivan Lendl in the final. This remarkable achievement remains one of the greatest upsets in major history, as Edmondson claimed his only Grand Slam title against a player who would dominate the sport for years.
Despite his small stature, Karlovic utilized his massive serve to defeat six-time champion Roger Federer in the third round. The match lasted over five hours, highlighting how a specific tactical advantage can neutralize even the most technically superior player on grass courts.
Ranked number two and the favorite, Halep did not fit the typical 'underdog' mold but faced Serena who was injured. However, many view her dominant performance against a legend coming off injury as a tactical masterclass. This entry is often debated; a clearer underdog is included below.
Unseeded and unheralded, Stich defeated the two-time defending champion Boris Becker in straight sets in the final. This victory stunned the tennis world, proving that a solid all-court game could overcome the explosive power and experience of a established grass-court specialist.
The 14-year-old Israeli qualifier defeated the sixth-seeded Rafael Nadal in a thrilling five-set match. This historic upset made Gal Peretz the youngest player to ever win a main-draw match at a Grand Slam, capturing global attention for her fearless play against a top-10 opponent.
While both were top players, Mauresmo, who had struggled in previous finals, decisively beat the three-time defending champion Henin. It is considered an underdog story in the context of final outcomes, as Henin had been nearly invincible on clay during that era.
Though McEnroe was ranked higher, the narrative often casts Borg as the unbeatable force until this epic five-set final. McEnroe's aggressive net play and mental resilience in the tiebreakers marked a shift in tennis dominance, though this is more a clash of titans than a pure underdog story.
Unseeded and ranked outside the top 20, Collins defeated the world number one and defending French Open champion Swiatek in the quarterfinals. Her powerful left-handed forehand and consistent depth disrupted Swiatek's rhythm, signaling a major upset in the women's tour.
The unseeded British player defeated the Spanish legend in straight sets, showcasing a mature baseline game. This victory broke Nadal's long unbeaten streak at the Australian Open and highlighted Draper's potential as a future star capable of beating the best.
Strycova, a doubles specialist and lower-ranked player, shocked the world number one and defending champion Barty in the quarterfinals. Her defensive grit and unexpected power from the baseline dismantled Barty's confidence in a stunning upset on the clay courts of Roland Garros.
Fognini, ranked 21st but often perceived as inconsistent, defeated the heavy favorite Nadal in the quarterfinals. This victory was particularly significant as it ended Nadal's dominance in the tournament that year, demonstrating that mental toughness could outweigh technical superiority.
Ranked 29th, Boulter defeated the world number one and defending champion Sabalenka in a grueling three-set match. Her ability to handle power and stay patient in long rallies earned her a spot in the semifinals, marking one of the biggest wins of her career.
Ivanisevic, entering with a wildcard after years of injury and poor ranking, defeated the higher-ranked Rafter. This victory is the quintessential underdog story, where sheer will and a powerful serve carried him to his first and only Grand Slam title.
The unseeded Chinese player defeated the world number one in straight sets during the semifinals. Her aggressive style and mental composure on the big stage shocked the tennis world, ending Swiatek's tournament run and announcing Zheng as a major force in women's tennis.
Wozniacki, returning to form after years away from the top, defeated the reigning champion Azarenka. While not an extreme underdog, her journey back to the top of the sport and victory over a dominant player made it a significant narrative upset in the tennis calendar.
The unseeded Ukrainian player defeated the higher-seeded American star in a hard-fought three-set match. Kostyuk's fearless aggression and ability to capitalize on unforced errors highlighted the volatility of Grand Slam singles draws.
While not a Grand Slam, this final serves as a modern underdog narrative where the unseeded Sinner defeated the world number one. It illustrates the shifting dynamics in men's tennis, where younger players are consistently dethroning established champions.
The unseeded Russian player defeated the legendary Serena Williams in the second round before going on to win the title. Her powerful serve and clean groundstrokes overwhelmed the 23-time champion, marking the end of an era and the rise of a new generation.
Gauff, unseeded and recovering from injuries, defeated the higher-ranked Osaka in a dramatic three-set final. This victory showcased her mental growth and ability to perform under pressure, securing her first Grand Slam title and cementing her status as a top player.