The 2026 World Cup will be the biggest ever, featuring 48 teams and opening the door to even more upsets. From the iconic 1950 victory of amateur USA over England to modern shocks, data reveals patterns in football's biggest surprises.
Methodology: Measuring Upsets
Starting from the 1993 FIFA men's world ranking system, we analyzed each World Cup match where a lower-ranked team beat a higher-ranked opponent. The ranking disparity determines the 'upset score', with larger gaps represented by bigger circles in our graphics. Upsets are marked in red, penalty shootout wins have a white border.
USA 1994: Regional Rivalries and Bulgarian Brilliance
The 1994 World Cup saw consistent upsets in the group stage, including Belgium (ranked 27) defeating the Netherlands (2) and debutants Saudi Arabia (34) beating Morocco (28). The tournament's most iconic underdog moment came in the quarter-finals, when Yordan Letchkov's header secured Bulgaria's (29) victory over top-ranked Germany (1). Bulgaria also beat Argentina (8) in the group stage and Mexico (16) in a penalty shootout during the round of 16.
France 1998: Upsets All the Way
This World Cup culminated in an underdog victory, as hosts France (17) beat top-ranked Brazil (1) 3-0 in the final, with two headers from Zinedine Zidane. The biggest upset was Nigeria (74) defeating Spain (15) 3-2 in the group stage, and also beating Bulgaria (35) 1-0. The quarter-finals saw Croatia (19) knock out Germany (2) and the Netherlands (25) defeat Argentina (6).
South Korea and Japan 2002: Hosts Beat the Heat; France Crash Out
South Korea (40) were the tournament's champion underdogs, reaching the semi-finals by beating Poland (38), Portugal (5), Italy (6), and Spain (8). The opening game saw Senegal (32) defeat reigning champions France (3) 1-0, a historic win for the former colony over the imperial power.
Germany 2006: The Most Unpredictable Modern World Cup?
Germany 2006 is statistically the most surprising recent World Cup, with 21 upsets. Notable upsets included Ukraine's (45) round-of-16 victory over Switzerland (35) in their first World Cup. Debutants included Angola, Ghana, Côte d'Ivoire, Trinidad and Tobago, and Togo.
South Africa 2010: A Huge Upset, but Underdogs Struggle
South Africa (83) defeated France (9) with the biggest upset score but became the first host nation eliminated in the group stage. Other upsets: South Korea (47) beat Greece (13), Slovakia (34) beat Italy (5). France and Italy both failed to progress. North Korea (103) lost all three matches.
Brazil 2014: Costa Rica v Champions in the 'Group of Death'
Spain (1) crashed out in the group stage, and hosts Brazil (3) lost 7-1 to Germany (2) in the semi-finals. Group D featured three former world champions (England, Italy, Uruguay) and Costa Rica (28). Costa Rica beat Italy 1-0 and drew with England to advance, eliminating Italy and England.
Russia 2018: Controversy and Semi-Final Surprises
Russia (70) benefited from host status, beating Spain (10) in the round of 16. Croatia (20) knocked out England (12) in the semi-finals, and France (7) beat Belgium (3) to deny their 'golden generation' a trophy.
Qatar 2022: Morocco Work Magic at a Winter World Cup
Morocco (22) became the first African and Arab team to reach the semi-finals, beating Belgium (2), Canada (41), Portugal (9), and Spain (7) in a penalty shootout. Their run thrilled fans worldwide.
Will Underdogs Triumph at Canada-Mexico-USA 2026?
The expanded 48-team format, spread across 16 cities and three countries, could lead to more upsets. Debutants include Cape Verde (69), Curaçao (82), Jordan (63), and Uzbekistan (50). Potential upsets: Haiti (83) vs Scotland (43) on June 13; New Zealand (85) vs Iran (21) on June 15; Cape Verde (69) vs Uruguay (17) on June 21.
