Erste Bank Open, Qualification: Adolfo Vallejo vs Lorenzo Sonego

Kalshi — primary rule

If Adolfo Daniel Vallejo wins the Vallejo vs Sonego professional tennis match in the 2026 ATP Vienna Qualification Round 1 after a ball has been played, then the market resolves to Yes.

Polymarket — resolution criteria

This market refers to the tennis match between Adolfo Vallejo and Lorenzo Sonego in the Erste Bank Open, Qualification, originally scheduled for October 24, 2026 at 6:30AM ET. This market will resolve to 'Adolfo Vallejo' if Adolfo Vallejo advances against Lorenzo Sonego. This market will resolve to 'Lorenzo Sonego' if Lorenzo Sonego advances against Adolfo Vallejo. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 7, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.