This is a polymarket on whether Carlos Ulberg or Dominick Reyes will win their bout at UFC Fight Night: Ulberg vs. Reyes, scheduled for September 27, 2025.

This market will resolve to "Ulberg" if Carlos Ulberg is declared the winner.
This market will resolve to "Reyes" if Dominick Reyes is declared the winner.

If the fight is declared a draw, or if, for any reason, the bout is not scored, postponed after October 4, 2025, or canceled, this market will resolve 50–50.

The primary resolution source will be ESPN. A consensus of credible reporting may also be used.