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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| National Bank Open: Marta Kostyuk vs Iga Swiatek | 0% | −41 pts | — | — · <1¢ | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Match O/U 21.5 | 100% | +51 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 Winner | 100% | +54 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set Handicap +/-1.5 | 0% | −27 pts | — | — · <1¢ | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set Handicap +/-1.5 | 0% | −37 pts | — | — · <1¢ | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Total Sets: O/U 2.5 | 100% | +61 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set 2 Winner | 0% | −50 pts | — | — · <1¢ | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Match O/U 23.5 | 100% | +59 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 O/U 10.5 | 0% | −36 pts | — | — · <1¢ | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 O/U 9.5 | 0% | −47 pts | — | — · <1¢ | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Match O/U 22.5 | 100% | +57 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| Completed Match | 100% | +50 pts | — | 99¢ · 100¢ (1¢) | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set 1 O/U 8.5 | 100% | +42 pts | — | >99¢ · 100¢ (<1¢) | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set 2 O/U 8.5 | 0% | −49 pts | — | — · <1¢ | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set 2 O/U 9.5 | 0% | −49 pts | — | — · <1¢ | — | ended |
| National Bank Open: Marta Kostyuk vs Iga Swiatek Set 2 O/U 10.5 | 0% | −49 pts | — | — · <1¢ | — | ended |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 76d | Weaseloftheweek | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $45,608 | −$46 −0.1% | — |
| 76d | PeterSagan2 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $10,160 | −$10 −0.1% | — |
| 76d | VvladS | National Bank Open: Marta Kostyuk vs Iga Swiatek Set Handicap +/-1.5 | SellSwiatek>99¢ | $1,018 | −$1 −0.1% | — |
| 76d | DAXLR | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $1,115 | −$1 −0.1% | — |
| 76d | jiiivi655 | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $1,247 | −$1 −0.1% | — |
| 76d | Aaam-676 | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $1,722 | −$2 −0.1% | — |
| 76d | SenseiOmi | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $1,362 | −$1 −0.1% | — |
| 76d | Kalahanda | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $2,779 | −$3 −0.1% | — |
| 76d | Scornful-Gym-Retreat | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $2,497 | −$2 −0.1% | — |
| 76d | Used-Efficiency | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $1,345 | −$1 −0.1% | — |
| 76d | Roger2024 | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $1,209 | −$1 −0.1% | — |
| 76d |  alpheclabs | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $3,653 | −$4 −0.1% | — |
| 76d | DaBossHogg | National Bank Open: Marta Kostyuk vs Iga Swiatek Match O/U 21.5 | SellOver>99¢ | $4,424 | −$4 −0.1% | — |
| 76d | Kl1023yx | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $13,305 | −$13 −0.1% | — |
| 76d | blket | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $12,870 | −$13 −0.1% | — |
| 76d | saltibiscoti | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek>99¢ | $1,936 | −$2 −0.1% | — |
| 76d | jtwyslljy | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek97¢ → 100¢ | $9,696 | −$259 −2.7% | — |
| 76d | mauricebishop | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek96¢ → 100¢ | $1,014 | +$42 +4.2% | 4 |
| 76d | swisstony5 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek89¢ → 100¢ | $18,513 | +$2,400 +13% | 4 |
| 76d | yupiiiiiiiii | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek96¢ → 100¢ | $1,910 | −$90 −4.7% | — |
| 76d | yupiiiiiiiii | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek>99¢ | $3,499 | +$8 +0.2% | 4 |
| 76d |  0xdimasdep | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek97¢ → 100¢ | $1,588 | −$46 −2.9% | — |
| 76d | tennis-loser | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek97¢ → 100¢ | $7,000 | +$202 +2.9% | 4 |
| 76d | pagliacci4 | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek97¢ → 100¢ | $1,465 | +$42 +2.9% | 4 |
| 76d | dmoralez7 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek78¢ → 100¢ | $17,624 | +$5,031 +29% | 4 |
| 76d | ViperVenom | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek95¢ → 100¢ | $1,306 | −$69 −5.3% | — |
| 76d | ehsantrade | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek90¢ → 100¢ | $1,944 | −$210 −11% | — |
| 76d | Arcus-AI2 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek78¢ → 100¢ | $3,900 | −$1,100 −28% | — |
| 76d | blket | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek93¢ → 100¢ | $12,000 | +$883 +7.4% | 4 |
| 76d |  BlessedSunshine888 | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek92¢ → 100¢ | $2,095 | −$182 −8.7% | — |
| 76d | 0F626 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek90¢ → 100¢ | $79,063 | +$8,783 +11% | 4 |
| 76d | pammbettingbeta | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek95¢ → 100¢ | $1,043 | +$55 +5.3% | 4 |
| 76d |  Marcoli | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek93¢ → 100¢ | $50,000 | +$3,705 +7.4% | 4 |
| 76d | Arcus-AI | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek92¢ → 100¢ | $1,840 | +$160 +8.7% | 4 |
| 76d | saltibiscoti | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek92¢ → 100¢ | $1,783 | +$155 +8.7% | 4 |
| 76d | Tedious-Purchase2 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek79¢ → 100¢ | $4,000 | +$1,034 +26% | 4 |
| 76d | Substantial-Service | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek83¢ → 100¢ | $1,897 | +$398 +21% | 4 |
| 76d |  riggggggedGGGGr16 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk39¢ → 0¢ | $40,164 | −$40,164 −100% | 4 |
| 76d | Betzar2 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek50¢ → 100¢ | $3,775 | +$3,737 +99% | 4 |
| 76d | 0F623 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek71¢ → 100¢ | $13,990 | −$5,812 −42% | — |
| 76d | eokho3 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk37¢ → 0¢ | $6,390 | −$6,390 −100% | 4 |
| 76d | dmoralez4 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek67¢ → 100¢ | $5,254 | −$2,544 −48% | — |
| 76d |  TRCM2 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk23¢ → 0¢ | $2,643 | −$2,643 −100% | 4 |
| 76d | flatbarrel | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk19¢ → 0¢ | $1,156 | −$1,156 −100% | 4 |
| 76d | 0b1 | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek83¢ → 100¢ | $3,213 | +$658 +20% | 4 |
| 76d | Rash-Copying2 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek62¢ → 100¢ | $16,562 | −$10,231 −62% | — |
| 76d | Kalahanda | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek77¢ → 100¢ | $2,152 | +$630 +29% | 4 |
| 76d | eokho | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellMarta Kostyuk29¢ → 0¢ | $1,667 | +$1,667 +100% | — |
| 76d |  ArturitoFilito | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk43¢ → 0¢ | $3,294 | −$3,294 −100% | 4 |
| 76d | Afh1994 | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek57¢ → 100¢ | $1,290 | −$973 −75% | — |
| 76d | dmoralez5 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellMarta Kostyuk61¢ → 0¢ | $7,379 | +$7,379 +100% | — |
| 76d | HomeRunHazard2 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk54¢ → 0¢ | $10,526 | −$10,526 −100% | 4 |
| 76d | Weaseloftheweek | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek57¢ → 100¢ | $11,649 | +$8,788 +75% | 4 |
| 76d | alexdave888 | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk45¢ → 0¢ | $2,437 | −$2,437 −100% | 4 |
| 76d |  tradecraft5 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk57¢ → 0¢ | $13,018 | −$13,018 −100% | 4 |
| 76d | omnibus-076daa5 fills | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyMarta Kostyuk55¢ → 0¢ | $7,729 | −$7,729 −100% | 4 |
| 76d | neutralwave23 | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellIga Swiatek40¢ → 100¢ | $1,223 | −$1,834 −150% | — |
| 76d | Kl1023yx | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek43¢ → 100¢ | $4,730 | +$6,270 +133% | 4 |
| 76d |  MurkSniper | National Bank Open: Marta Kostyuk vs Iga Swiatek | BuyIga Swiatek46¢ → 100¢ | $2,591 | +$3,042 +117% | 4 |
| 76d | Arcus-AI | National Bank Open: Marta Kostyuk vs Iga Swiatek | SellMarta Kostyuk54¢ → 0¢ | $3,240 | +$3,240 +100% | — |
ArturitoFilito13,496 sharesThis market refers to the tennis match between Marta Kostyuk and Iga Swiatek in the National Bank Open, originally scheduled for August 9, 2026 at 10:00AM ET. This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Iga Swiatek. This market will resolve to 'Iga Swiatek' if Iga Swiatek advances against Marta Kostyuk. 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: 0¢ for National Bank Open: Marta Kostyuk vs Iga Swiatek means the market gives it about 0%.