
QuiniPrats editorial team
5 min read
Published on 31 May 2026
Morocco reached the semi-finals in 2022. Japan knocked out Germany and Spain. Saudi Arabia beat Argentina. The modern World Cup has shown that upsets aren't accidents — they're trends. Here are the 4 teams that could ruin your predictions league.
Every World Cup has its breakout team. The one everyone overlooks, the one the bookies write off in the group stage, and the one that ends up wrecking the predictions of millions of fans. With the 48-team format of the 2026 World Cup, there are more opportunities than ever for upsets. Here are the 4 main candidates to be the tournament's dark horse.

Qatar 2022 — Japan knocked out Germany (four-time world champions) and Spain (three-time European champions) in the group stage. They reached the round of 16 before being eliminated on penalties by Croatia. At the 2026 World Cup, Japan remains one of the most tactically disciplined sides on the planet. If they end up in your half of the bracket, they will hurt you.
Semi-finals in Qatar 2022. Morocco became the first African side to go that far at a World Cup. Manager Walid Regragui has built a defensive system as solid as a bunker and a devastating counter-attacking game. In 2026, they're no longer a surprise — they're a genuine semi-final contender and, if the draw falls right, perhaps even a finalist.
Food for thought: Morocco reached the semi-finals at the 2022 World Cup without losing a single match in 90 minutes. Every elimination came through a penalty shoot-out. Statistically, they were one of the hardest teams to beat in the tournament.
The Socceroos reached the quarter-finals in Qatar 2022 and were highly competitive throughout. At the 2026 World Cup, it all depends on the draw: if they land in a manageable group, they can easily reach the round of 16, and from there it's anyone's game. Their physicality and the intensity they bring to every match works in their favour against technically superior but less physically prepared sides.
Iran have qualified and their participation has sparked huge political controversy. Iranian players are considering playing their matches in Mexico for security reasons due to US visa restrictions. But on the pitch, Iran are a solid side who could cause upsets in the group stage, especially if opponents underestimate their defensive intensity.
In a predictions league, upsets can be your greatest advantage or your downfall. If you back an outsider who goes far, you earn points your rivals haven't. When everyone tips the same favourites, the points differences come from the unexpected teams.
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