This market resolves to the group that produces the biggest upset of the 2026 FIFA World Cup, as determined by WCINU's multi-source oracle once the tournament concludes.
"Biggest upset" is scored by FIFA world-ranking differential at kickoff versus the result, across every match in each group. The group containing the single most ranking-defying result wins. Ties are broken by aggregate ranking differential across the group's matches.
If at any point it becomes impossible for a group to register the biggest upset based on the rules of FIFA, it remains eligible only until the tournament's final match is settled.
If the 2026 FIFA World Cup is permanently canceled or has not been completed by October 13, 2026, 11:59 PM UTC, this market resolves to "Other". Settlement follows a 30-minute dispute window for VAR reversals and feed corrections. Not affiliated with FIFA.
12 groups, 13 ways to get cooked. Pick the one that flips its predicted leader the hardest — the group where the form book gets torn up the most.
Each group's matches are scored on how far the results defy the FIFA world rankings at kickoff. The group holding the single biggest ranking upset takes the market; ties break on aggregate ranking differential across the group's fixtures.
Settled by the multi-source oracle at the end of the group stage, after a 30-minute dispute window. Predictions can be cashed out early at the live multiplier any time before settlement.