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.
