On 11 June 2026, before a single ball had been kicked at the expanded 48-team World Cup, Polymarket's outright winner board had Spain at 16.95% and France at 16.05%. England and Portugal were tied at 10.85%. Argentina, the holders by virtue of Qatar 2022, sat fifth at 9.35%. Brazil, the sport's most decorated nation, sixth at 8.45%. That is the snapshot we are pinning to the wall.
This article is a pre-registration. We are publishing what the market expected before kickoff so that, when the tournament ends, we can grade those expectations honestly against what actually happened. No retrofitting, no quiet edits, no convenient framing after the fact. The baseline figures below come from one Polymarket snapshot captured on the morning of 11 June 2026, and every number you read in this piece is from that snapshot and nothing else.
Why pre-register at all
Most World Cup punditry is written for entertainment and graded by nobody. A pundit picks Brazil in May, Brazil go out in the quarters, and by August the pick has quietly evaporated from the timeline. Prediction markets do not get that courtesy. Every contract resolves to one or zero, and every probability the market quoted along the way is a testable claim.
That is the point of grading the board with Brier scores once the trophy is lifted. A Brier score punishes confident wrong calls more than tentative ones and rewards probabilities that match reality across the whole distribution, not just the top pick. Our guide to why prediction markets are accurate walks through the maths and the calibration logic, and the same framework will be applied to every figure quoted here.
The value of writing it down beforehand is precisely that we cannot move the goalposts.
The outright board, in three tiers
Look at the top of the board and the market is telling a clear story. Two European favourites are basically tied for the trophy, with Spain at 16.95% and France at 16.05%. That gap is inside the noise of a single day's trading. Then a step down to a tier of four nations, with England and Portugal both at 10.85%, Argentina at 9.35%, and Brazil at 8.45%. Six nations carrying roughly 72% of the implied probability between them.
Below that, the drop steepens. Germany at 5.25% and Netherlands at 4.05% form a small European mid-tier. Norway sit at 2.45%, Belgium at 2.15%. Colombia at 1.85% are the top-priced South American outside the big two, followed by Japan at 1.75% and Morocco at 1.55%, the last of whom were the surprise semi-finalists of 2022.
The long tail still gets a number. Mexico at 1.35%, Switzerland and Turkey both at 1.25%, USA at 1.15%, Uruguay at 1.05%, Croatia at 0.95%, and Ecuador at 0.85% round out the top twenty. Below that, the market is pricing 28 further nations at fractions of a percent, which is what you would expect when 48 teams compete for one trophy.
The shape is European-heavy at the top, with the historic South American powers a tier below. That is the testable claim.
Reach-final probabilities and the implied bracket
The final-reaching board is where the bracket structure starts to show. Spain and France are again paired at the top, both at 28.5% to make the final. England follow at 23.5%, then a cluster of three contenders close together: Brazil and Argentina tied at 19.5% and Portugal at 18.5%.
Notice what the spread of those numbers implies. If you add the top six finalist probabilities, you get well past 100%, which is exactly correct because two of these nations have to make the final for there to be one at all. Markets price the question "will this team reach the final?" as a yes-or-no contract on each team independently, and our explainer on how prediction market odds work sets out why those probabilities should sum to roughly two and not one.
Below that top six, Germany at 12.5% and Netherlands at 9.5% are the European mid-tier. Norway at 7.5% and Belgium at 6.5% follow. Colombia at 6.05%, Mexico at 5.3%, Japan at 5.1% and Morocco at 5.05% form a tight band of dark-horse hopefuls. Turkey at 4.15% and Croatia at 3.6% close the top sixteen.
The ratio of outright-winner probability to reach-final probability is roughly one to two for the heaviest favourites and stretches wider as you go down the board, which is the market expressing how it expects a knockout bracket to thin nations out.
The twelve group-winner favourites
Expansion to 48 teams gave us 12 groups, A through L. The group-winner contracts are arguably the cleanest test of the market, because the sample is short, the outcome is unambiguous, and there are 12 of them to score at once.
The overwhelming favourites are concentrated in the European groups. Spain are at 78.5% to win Group H. England at 68.5% to win Group L. Germany at 67.5% to win Group E. Belgium at 69.5% in Group G. France at 65.5% in Group I. Portugal at 62.5% in Group K. Argentina at 71.5% in Group J. Brazil at 71.5% in Group C.
The genuinely tight groups are the interesting ones. Group D has Turkey and USA both at 37.5%, dead level, with Paraguay at 17.5% and Australia at 9.8% in the chasing pack. That is the closest top-of-group market on the board, and one of the highest-information contracts to track during the group stage.
Group A has Mexico at 57.5%, with South Korea at 21% and Czechia at 17.5% close enough that an upset on matchday one swings the market. Group B has Switzerland at 56.5% and Canada at 30.5%, the latter a notably high number for a co-host outside the traditional powers. Group F gives Netherlands 53.5% and Japan 27.5%, the tightest of the heavyweight-European groups. The runners-up in each of these tighter groups carry real probability, which means the market is saying "the favourite is favoured but do not assume."
At the other end, the longest shots have nowhere to hide. Curaçao at 0.25% in Group E, Haiti at 0.65% in Group C, Iraq at 0.95% in Group I and Cape Verde at 1.75% in Group H are the bottom of the group-winner board. Every one of these tiny numbers is a testable prediction.
The golden boot top of book
Individual top-scorer markets are noisier than team markets, because the outcome depends on minutes played, penalty duties, knockout draw, and luck. The market knows this, which is why even the favourite is priced under one in five.
Kylian Mbappé tops the golden boot board at 16.5%. Harry Kane follows at 13.5%. Mikel Oyarzabal at 8.5% is the highest-priced Spaniard, ahead of more famous names, which is the kind of pricing that often reflects penalty-taking duty and starting-eleven certainty rather than pure profile. Erling Haaland sits at 5.5%, with Michael Olise at 5.35% and Cristiano Ronaldo at 4.8% behind him. Lionel Messi at 4.55% and Julián Álvarez at 4.3% lead Argentina's representation.
The Brazilian forwards split their probability mass. Raphinha at 3.6% and Vinícius Júnior at 2.8% are the headline names, with Igor Thiago at 2.15% rounding out the top sixteen. Lamine Yamal at 3.3% is the youngest name in that group. Ferran Torres at 2.65%, Ousmane Dembélé at 2.35%, Lautaro Martínez at 2.35% and Cody Gakpo at 2.25% fill out the rest.
The top sixteen between them account for around 85% of the golden boot board. The remaining probability is spread across dozens of strikers, midfielders and dark horses the market does not see as credible top scorers but is unwilling to write off entirely.
What this baseline can and cannot tell you
A snapshot is not a forecast that stays still. The numbers above are the market's central estimates on the morning of 11 June 2026, before the opening match, and they will move on every match, every injury, and every red card. The discipline of the accuracy study is that we are not going to re-anchor when they do.
What the baseline can tell you is the shape of consensus before any information from the actual tournament arrives. It can tell you that the market does not think this is a two-horse race between Spain and France in any strong sense, but rather a top-six race with two slight favourites. It can tell you that Group D is genuinely a coin-flip between Turkey and USA at the top, while Group H is a Spain procession barring shock. It can tell you the golden boot is the most fragmented of the major boards.
What it cannot tell you is which way any of this is going to break. A 70% probability becomes wrong roughly three times in ten, which is the entire point of grading the board honestly rather than picking the winners after the fact.
iPredicta is the discovery platform behind this analysis, surfacing prediction-market contracts across regulated venues for readers in the UK and beyond, and the World Cup accuracy study is the first long-form grading exercise we are running publicly from baseline to resolution. The next instalment will not appear until the trophy is lifted.
Frequently asked questions
Who do the prediction markets think will win the 2026 World Cup?
As of 11 June 2026, before the opening match, Polymarket had Spain at 16.95% and France at 16.05% as joint favourites, with England and Portugal tied at 10.85%, Argentina at 9.35% and Brazil at 8.45%. That is six nations sharing roughly 72% of the implied probability between them, with no single team carrying anywhere near majority confidence. Germany at 5.25% and Netherlands at 4.05% lead the next tier. The shape is European-heavy at the top with the historic South American powers a step behind. Twenty-eight further nations are priced below 1%, which reflects that 48 teams are competing for one trophy. These figures will move during the tournament; we are pinning them as a pre-registered baseline.
What is a pre-registered prediction market baseline?
It is a snapshot of market probabilities published before an event happens, locked in so it can be graded honestly afterwards. The point is to prevent retrofitting. Most football punditry quietly forgets its bad calls; a pre-registered baseline cannot, because the numbers are public and dated. When the 2026 World Cup ends, every probability quoted in this article will be graded using Brier scores, which measure how close probabilistic predictions came to reality across the whole distribution rather than just whether the favourite won. Our explainer on why prediction markets tend to be accurate walks through the calibration logic. The exercise is intelligence-focused; we are testing the market, not picking winners.
Which group looks tightest at the top in the 2026 World Cup market?
Group D is the tightest by some distance, with Turkey and USA both priced at 37.5% to win the group as of 11 June 2026. Paraguay sit at 17.5% and Australia at 9.8%, meaning the chasing pair carry meaningful probability rather than being written off. That is the closest top-of-group market on the entire 12-group board. Group A, with Mexico at 57.5% against South Korea at 21% and Czechia at 17.5%, and Group F, with Netherlands at 53.5% against Japan at 27.5%, are the next most competitive. By contrast Group H, where Spain are at 78.5%, is the most one-sided of the twelve.
Who is favourite for the 2026 World Cup golden boot?
Kylian Mbappé led the golden boot board at 16.5% as of 11 June 2026, with Harry Kane at 13.5% the only other player in double figures. Mikel Oyarzabal at 8.5% is the highest-priced Spaniard, ahead of more famous names, which often signals expected penalty duty and starting certainty rather than profile. Erling Haaland at 5.5%, Michael Olise at 5.35% and Cristiano Ronaldo at 4.8% follow. Lionel Messi sits at 4.55% and Julián Álvarez at 4.3%. The top sixteen players between them account for roughly 85% of the implied probability; the rest is fragmented across dozens of forwards, which reflects how hard top-scorer markets are to call.
How will iPredicta grade these World Cup predictions after the tournament?
We will compute Brier scores on every contract quoted in this article and publish them in full once the tournament resolves. Brier scoring takes the squared error between each predicted probability and the actual outcome (one if it happened, zero if it did not), then averages across all contracts. Lower is better, and the metric punishes confident wrong calls more heavily than tentative ones. We will grade the outright winner board, the reach-final tier, all twelve group-winner contracts and the golden boot top of book. The figures come from a single Polymarket snapshot dated 11 June 2026 and will not be re-anchored as the tournament unfolds. The full method is described in our accuracy explainer.