UFC Fight Night: Serghei Spivac vs. Vitor Petrino (Heavyweight, Main Card)

Kalshi — primary rule

If Serghei Spivac wins the Spivac vs Petrino professional MMA fight originally scheduled for Aug 22, 2026, then the market resolves to Yes.

Polymarket — resolution criteria

This market will resolve to "Serghei Spivac" if Serghei Spivac is officially declared the winner of the fight against Vitor Petrino at UFC Fight Night: Hernandez vs. Rodrigues, scheduled for August 22, 2026. It will resolve to "Vitor Petrino" if Vitor Petrino is officially declared the winner. If the fight is declared a draw or technical draw, ruled a No Contest, not scored, canceled, or postponed beyond September 5, 2026, this market will resolve "50-50." The resolution source for this market will be official information from the UFC.