This market will resolve to "YES" if both Lionel Messi and Cristiano Ronaldo take the field as players in the same official match during the 2026 FIFA World Cup. Any on-field appearance will qualify, including regular time, stoppage time, and extra time. Otherwise, this market will resolve to "NO."

If the 2026 FIFA World Cup is not completed by July 31, 2026, 23:59 UTC, this market will resolve to "NO."

The primary resolution source will be official information from FIFA (https://www.fifa.com/). A consensus of credible reporting may also be used.