US Open: Joao Fonseca vs Tomas Machac

This is a polymarket on the tennis match between Joao Fonseca and Tomas Machac in the 2025 US Open men's singles second round, scheduled for August 27, 2025. This market will resolve to 'Fonseca' if Joao Fonseca advances against Tomas Machac. This market will resolve to 'Machac' if Tomas Machac advances against Joao Fonseca. If the match is canceled (not played at all), ends in a tie, or is delayed beyond September 3, 2025 without a winner determined, this market will resolve to 50-50. If the match ends in a walkover (one player withdraws before the start and the other advances automatically), this market will resolve in favor of the player who officially advances to the next round. The primary resolution source will be official information from the US Open. A consensus of credible reporting may also be used.