National Bank Open: Marta Kostyuk vs Iga Swiatek - Aug 16, 2026
Live Polymarket analytics for National Bank Open: Marta Kostyuk vs Iga Swiatek - Aug 16, 2026 — $219K volume · 50% Kostyuk vs. Swiatek: Match O/U 21.5. Whale positions, bot activity, and order book depth on PolyCollect.
Leading Outcomes
Kostyuk vs. Swiatek: Set 1 Games O/U 8.5
69%Kostyuk vs. Swiatek: Set 2 Games O/U 8.5
51%Kostyuk vs. Swiatek: Set 2 Games O/U 9.5
51%Kostyuk vs. Swiatek: Set 2 Games O/U 10.5
51%Completed Match: Marta Kostyuk vs Iga Swiatek
50%
Key metrics
Score = Volume + Liquidity + Spread. Whales add a small bonus.
Labels :
- Prime — score 88+ (after rounding), or strong volume + liquidity + tight spread with whales; not Thin
- Active — solid but below Prime thresholds
- Thin — low volume or wide spread (harder to trade size)
- Avoid — dead / illiquid, or market is closed
Not a prediction of how the market resolves
Number of seals (5K+), sharks (25K+) and whales (50K+) present in this market, throughout all outcomes
Outcome Analysis
Per-outcome prices, flow & whale positions
Resolution Criteria
This 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.
Resolution source: https://www.wtatennis.com/scores
Related Markets
TrendingTrending by 24h net flow
Resolution Criteria
This 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.
Resolution source: https://www.wtatennis.com/scores