Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| National Bank Open: Alina Korneeva vs Polina Kudermetova | 100% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set 1 Winner | 100% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Total Sets: O/U 2.5 | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Match O/U 21.5 | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set 2 Winner | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set 2 O/U 8.5 | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set Handicap +/-1.5 | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Match O/U 22.5 | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set 2 O/U 9.5 | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set Handicap +/-1.5 | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Match O/U 23.5 | 50% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set 2 O/U 10.5 | 50% |
| Completed Match | 0% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set 1 O/U 8.5 | 0% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set 1 O/U 9.5 | 0% |
| National Bank Open: Alina Korneeva vs Polina Kudermetova Set 1 O/U 10.5 | 0% |
Market context
Polymarket is pricing Alina Korneeva to win at **100% YES** in this National Bank Open first-round contract, so the market is effectively treating her as a near-certain advance on Polygon-settled conditional tokens backed by USDC. The listed price leaves almost no room for uncertainty, even though the contract only resolves to Korneeva if she advances against Polina Kudermetova, and falls to 50-50 if the match is cancelled, ends level, or is delayed beyond the settlement rules.
That reading is stronger than the broader pre-match tape. Independent tennis odds and previews have generally made Korneeva the favourite, but not by anything like a certainty: Tennis Tonic opened her around 1.41 to win, while other bookmakers clustered closer to roughly 1.46-1.59 on Korneeva and 2.50-2.86 on Kudermetova, which implies a competitive match rather than a lock.[1][2][15][16] That gap matters for Polymarket users because the contract price is not just a view on who is better; it also embeds the chance of upset, retirement, walkover, or any settlement-triggering delay.
The main catalysts now are practical rather than speculative: official match status, any order-of-play change, and whether the fixture is actually completed within the market’s settlement window. Tennis.com and tournament listings have the match on the National Bank Open schedule for 3 August in Toronto, so the key trader watchpoints are simple: whether the match starts on time, whether it finishes, and whether the winner is formally recorded before the seven-day fallback logic can matter.[6][8] If the event is interrupted by weather, scheduling reshuffles, or a pre-match withdrawal, that is where the 50-50 outcome becomes relevant on-chain.
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 PolyGram, 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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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 PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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