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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans | 100% | +56 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans Set 1 Winner | 100% | +36 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans Match O/U 21.5 | 0% | −48 pts | — | — · <1¢ | — | ended |
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans Total Sets: O/U 2.5 | 0% | −39 pts | — | — · <1¢ | — | ended |
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans Match O/U 23.5 | 0% | −51 pts | — | — · <1¢ | — | ended |
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans Match O/U 22.5 | 0% | −52 pts | — | — · <1¢ | — | ended |
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans Set 1 O/U 9.5 | 100% | +54 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans Set 1 O/U 8.5 | 100% | +47 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| Oeiras 4: Sofia Costoulas vs Anouk Koevermans Set 1 O/U 10.5 | 0% | −51 pts | — | — · <1¢ | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 187d | rndmb3 | Oeiras 4: Sofia Costoulas vs Anouk Koevermans | SellSofia Costoulas>99¢ | $3,524 | −$4 −0.1% | — |
| 187d |  INADEDEN | Oeiras 4: Sofia Costoulas vs Anouk Koevermans | SellSofia Costoulas>99¢ | $3,955 | −$4 −0.1% | — |
| 187d | thisistheone3 | Oeiras 4: Sofia Costoulas vs Anouk Koevermans Set 1 Winner | SellCostoulas>99¢ | $1,108 | −$1 −0.1% | — |
| 187d | thisistheone3 | Oeiras 4: Sofia Costoulas vs Anouk Koevermans Set 1 Winner | BuyCostoulas96¢ → 100¢ | $1,064 | +$44 +4.2% | 4 |
| 187d |  RN1 | Oeiras 4: Sofia Costoulas vs Anouk Koevermans | BuySofia Costoulas58¢ → 100¢ | $1,056 | +$765 +72% | 4 |
| 187d | INADEDEN | Oeiras 4: Sofia Costoulas vs Anouk Koevermans | BuySofia Costoulas39¢ → 100¢ | $1,359 | +$2,126 +156% | 4 |
| 187d | LYnetLY | Oeiras 4: Sofia Costoulas vs Anouk Koevermans | BuyAnouk Koevermans63¢ → 0¢ | $1,232 | −$1,232 −100% | 4 |
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, 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 WTA Tour. A consensus of credible reporting may also be used.
Sources: Polymarket's Gamma API, its CLOB price history and its Data API, read every two minutes. Prices are each outcome's Yes price, which is the market's probability: 100¢ for Oeiras 4: Sofia Costoulas vs Anouk Koevermans means the market gives it about 100%.