Dark Horse Sneak Attack—Four Teams That Could Surprise Everyone at the 2026 World Cup

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2026 World Cup Champion Predictions

While everyone is talking about Brazil, France, and Argentina, the real upside often hides in the dark horses that the market overlooks. Because the 2026 World Cup expands to 48 teams and the tournament format is changing, mid-tier teams have more opportunities to pull off upsets. The following four teams all have probabilities below 5% on Polymarket, but each has its own logic for an upset.

1. Portugal (currently about 4%)

Cristiano Ronaldo is highly likely to be playing in his last World Cup, and the team’s cohesion around him should not be underestimated. Aside from Ronaldo, the midfield spine formed by B. Fernandes, B. Silva, Leão, Felix, and Rúben Dias is strong enough to rival any top team. The biggest problem is head coach Martinez’s tactical indecisiveness. If Portugal can reach the semifinals, a 4% probability is a serious underestimate. I’m willing to put a 5% stake on Portugal.

2. United States (about 3%)

As one of the hosts (co-hosting with Canada and Mexico), the United States has a natural home advantage. Pulisic, Reyna, Balogun, McKennie, and others are in their prime years. More importantly, the U.S. team’s running ability and physical duels are very well-suited to the cup tournament format. In the last World Cup, they reached the Round of 16—this time, with home advantage, they could create history. If they go smoothly in the group stage, no opponent in the knockout rounds would dare to overlook them.

3. Netherlands (about 5%)

The Netherlands has already shaken off the psychological shadow of being “the king without a crown.” The back line of Van Dijk, Aké, and De Ligt is world-class, with De Jong and Koopmeiners controlling the midfield. Up front, Gakpo, Simons, and Malen combine speed with technique. Koeman’s tactical system is practical and efficient, making it especially suitable for knockout play. A 5% probability is fairly appealing and can serve as a hedge option.

4. Uruguay (about 2%)

Núñez, Valverde, Araujo, Bentancur… Uruguay is going through a transition of a golden generation. Coach Bielsa’s frantic pressing tactics have already shown their power in the Copa América. Uruguay has never been afraid of strong teams; their legendary fighting spirit is their greatest weapon. A 2% probability is basically a lottery ticket, but if you’re willing to bet on an upset, it could be the highest-return choice.

My dark horse portfolio

- Portugal 40% (probability 4%)
- United States 30% (probability 3%)
- Netherlands 20% (probability 5%)
- Uruguay 10% (probability 2%)

If any of these teams wins the tournament, the return would be more than 10 times. Of course, dark horses are called dark horses precisely because their probabilities are low. I recommend putting only 20% of your total investment into betting on dark horses, while keeping the remaining 80% on favorites.

Which dark horse do you think is most likely? Feel free to share your prediction screenshot in the comments.