World Cup Upsets: Ranking the Biggest Underdog Victories in Football History
The Evolution of World Cup Upsets
This year, the biggest ever World Cup will feature 48 teams, an increase from 32, opening up the tournament to even more upsets, shocks and surprises. The vagaries of the World Cup draw have given rise to classic underdog victories over the years, from an amateur USA team's shock defeat of the then-favourites England in 1950 onwards. But what does the data tell us about upsets in football's modern era?
Starting from the launch of the Fifa men's world ranking system in 1993, we have analysed each World Cup match in which an underdog beat a higher-ranked team, along with the ranking disparity between the teams: the bigger the gap, the higher the "upset score", and the larger the circle in the graphics below. Upsets are marked in red, while matches decided on penalties are represented with a white border.
USA 1994: Regional Rivalries and Bulgarian Brilliance
This World Cup was characterised by a consistent stream of upsets, particularly in the group stages, with a couple of surprise regional rivalries including Belgium (Fifa ranking 27) triumphing over the Netherlands (2) and Saudi Arabia (34), in their World Cup debut, seeing off Morocco (28).
The first World Cup after the dissolution of the USSR featured the first appearance by a unified German team and arguably the tournament's most iconic underdog moment, when a header by Yordan Letchkov secured Bulgaria's (29) victory over top-ranked Germany (1) in the quarter-finals. Bulgaria enjoyed a strong competition overall, including beating Argentina (8) in the group stages and a surprise round of 16 win against Mexico (16) in a penalty shootout.