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 |
|---|---|
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova | 100% |
| Completed Match | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 Winner | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 Winner | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set Handicap +/-1.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 8.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 9.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 10.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 8.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Total Sets: O/U 2.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 21.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 9.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 22.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set Handicap +/-1.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 10.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 23.5 | 0% |
Market context
Liudmila Samsonova and Barbora Krejcikova are due to meet in the National Bank Open second round in Toronto, and the market’s 100% crowd-implied price reflects a live match-up rather than a theoretical one. The historical frame is mixed but meaningful: Samsonova won their most recent meeting in Strasbourg on clay, and she also beat Krejcikova in their two hard-court meetings in Abu Dhabi in 2023 and 2024, while Krejcikova still arrives with the stronger ranking position and a solid overall hard-court record.[1][17]
That combination makes the current probability sensitive to form signals rather than reputation alone. Krejcikova has never won a main-draw match at this event in five appearances, which is a small but relevant Toronto-specific negative, whereas Samsonova reached the National Bank Open final in 2023 and therefore has evidence of handling the conditions well.[1][19] Models and previews cited by tennis outlets have leaned towards Krejcikova on current form, despite Samsonova’s head-to-head edge on hard courts, which shows why a high-credence market can still be anchored by opposite narratives about venue history and recent level.[5][7]
For traders, the key catalysts are practical rather than tactical: confirm the match actually starts at Court 1’s scheduled slot and watch for any delay, retirement, or weather disruption, because the settlement rules change if it is not completed. Lineup and fitness news matter more than ever in a short-window market, particularly for Krejcikova, whose scheduling and physical management are often scrutinised on the tour, while Samsonova’s recent coaching change after marrying her coach Alessandro Dumitrache is a background factor rather than an immediate trigger.[1][6]
Methodology
Sports-specific comparison page for National Bank Open: Liudmila Samsonova vs Barbora Krejcikova. 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
- 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.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- 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.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
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