Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Fees) Pick polygram.ink (preferred broker) |
83% | 17% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
83% | 17% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| National Bank Open: Elina Svitolina vs Iga Swiatek Set 1 O/U 8.5 | 83% |
| Completed Match | 50% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Set 2 O/U 8.5 | 50% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Set 1 O/U 9.5 | 50% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Set 2 O/U 9.5 | 50% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Set 2 O/U 10.5 | 50% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Set 1 O/U 10.5 | 50% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Match O/U 23.5 | 50% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Match O/U 22.5 | 49% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Set Handicap +/-1.5 | 46% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Total Sets: O/U 2.5 | 39% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Set 1 Winner | 38% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Set 2 Winner | 38% |
| National Bank Open: Elina Svitolina vs Iga Swiatek | 34% |
| National Bank Open: Elina Svitolina vs Iga Swiatek Match O/U 21.5 | 34% |
Market context
Based on real-money crowd forecasting, national bank open: elina svitolina vs iga swiatek stands at 83% likelihood according to current market consensus. This market refers to the tennis match between Elina Svitolina and Iga Swiatek in the National Bank Open, originally scheduled for August 12, 2026 at 3:00PM ET. This market will r…
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi Fees, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade National Bank Open: Elina Svitolina vs Iga Swiatek on Kalshi Fees
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