Spain favourites to win 2026 FIFA World Cup as Opta Supercomputer runs 10,000 simulations ahead of tournament

With the 2026 FIFA World Cup less than two weeks away, statistical modelling firm Opta has released its pre-tournament probability rankings, placing Spain as the most likely nation to be crowned world champions when the final concludes on July 19 at MetLife Stadium in East Rutherford, New Jersey.

According to Opta’s supercomputer simulations — run 10,000 times ahead of the tournament — Spain emerged as outright favourites, winning the competition in 16.1% of projected scenarios. France, England, and defending champions Argentina each registered a greater than 10% probability of lifting the trophy, placing them firmly in the second tier of contenders.

Rounding out the top ten in Opta’s model are Brazil, Germany, the Netherlands, Norway, and Belgium. Notably absent from serious contention are the three co-host nations. The United States, Mexico, and Canada were assigned very low win probabilities, reflecting the considerable quality gap between them and the established football powerhouses expected to challenge deep into the knockout rounds.

The 2026 edition marks a significant structural expansion for the tournament. For the first time in World Cup history, 48 nations will compete across 12 groups of four teams, producing a record 104 matches in total. The competition kicks off on June 11, 2026, with the United States, Mexico, and Canada sharing hosting duties — the first World Cup to be jointly staged across three countries.

Spain’s position at the top of Opta’s rankings is supported by sustained form over recent years. The side won UEFA Euro 2024 in Germany, defeating England in the final, and have maintained their status as one of the most tactically cohesive units in international football. However, their route through the group stage carries a notable complication: teenage forward Lamine Yamal is expected to miss Spain’s opening two fixtures. His return for the latter stages of the tournament is viewed as a potentially decisive factor in whether Spain can go the distance.

Opta’s supercomputer models have demonstrated a degree of reliability across previous major tournaments, though the firm and analysts consistently emphasise that probabilistic outputs are not guarantees. A 16.1% win probability for Spain, while the highest in the field, still means the model projects Spain failing to win the tournament in roughly five out of every six simulated editions.

Argentina arrive as defending champions, having claimed the trophy at the 2022 FIFA World Cup in Qatar — Lionel Messi’s first and only World Cup winner’s medal. France, meanwhile, are two-time World Cup winners and were runners-up in Qatar, making them perennial contenders in any pre-tournament analysis. England, who have not won the World Cup since 1966, have advanced consistently to the latter stages of recent major tournaments but are yet to convert that consistency into silverware.

The expanded 48-team format introduces new variables that could affect the reliability of pre-tournament models. More matches, a broader range of qualifying nations, and a revised knockout structure all add layers of uncertainty that were not present in previous 32-team editions. How traditional powerhouses navigate the group phase against lower-ranked opposition — and manage squad rotation across a denser fixture schedule — will be closely watched when the tournament opens on June 11.