Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set 2 O/U 8.5 | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Total Sets: O/U 2.5 | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set 2 O/U 9.5 | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set 2 Winner | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Match O/U 21.5 | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set 2 O/U 10.5 | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Match O/U 22.5 | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Match O/U 23.5 | 100% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito | 0% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set 1 Winner | 0% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set 1 O/U 8.5 | 0% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set Handicap +/-1.5 | 0% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set 1 O/U 9.5 | 0% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set Handicap +/-1.5 | 0% |
| National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito Set 1 O/U 10.5 | 0% |
Market context
Oksana Selekhmeteva’s qualification match against Aoi Ito in Toronto was due to be played on outdoor hard courts, with Selekhmeteva listed around No. 97 and Ito around No. 235 in the live pre-match feed.[1][9] There is no recorded head-to-head between them, so traders are reading this more through ranking gap and surface form than through any direct matchup history.[2][5]
That framing helps explain why the market should not treat a 0% implied probability as a signal about tennis strength: if the match is completed, the higher-ranked player has the clearer baseline case, but both players have patchy recent form and neither arrives with a decisive head-to-head edge.[2][13][15] Selekhmeteva’s broader recent hard-court record has been better than Ito’s in the available summaries, while Ito’s profile still carries upset potential because her results have been volatile rather than linear.[2][15]
The main trader watchpoint is whether the match is actually started and finished on schedule, because the market rules push any cancellation, tie, or delay beyond seven days into a 50-50 resolution. Live tennis listings had the match on Court 3 at 15:00 UTC, and later score feeds already suggest it was played to completion, which would remove schedule risk and make the only remaining catalyst the official result.[1][8] No credible beat-reporting has indicated a coaching change or major withdrawal around either player in the supplied sources, so the practical dependencies are the draw order, court timing, and whether Toronto qualifying proceeds without interruption.[1][6]
Methodology
Sports-specific comparison page for National Bank Open, Qualification: Oksana Selekhmeteva vs Aoi Ito. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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