Oeiras 4: Sofia Costoulas vs Anouk Koevermans

This market refers to the tennis match between Sofia Costoulas and Anouk Koevermans in the Oeiras 4, originally scheduled for April 21, 2026 at 5:00AM ET. This market will resolve to 'Sofia Costoulas' if Sofia Costoulas advances against Anouk Koevermans. This market will resolve to 'Anouk Koevermans' if Anouk Koevermans advances against Sofia Costoulas. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined,