Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Total Sets: O/U 2.5 | 100% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set 1 Winner | 100% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Match O/U 21.5 | 100% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set 1 O/U 8.5 | 100% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Match O/U 22.5 | 100% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set 1 O/U 9.5 | 100% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Match O/U 23.5 | 100% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint | 0% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set 2 Winner | 0% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set 2 O/U 8.5 | 0% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set Handicap +/-1.5 | 0% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set Handicap +/-1.5 | 0% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set 2 O/U 9.5 | 0% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set 1 O/U 10.5 | 0% |
| National Bank Open: Yulia Starodubtseva vs Maya Joint Set 2 O/U 10.5 | 0% |
Market context
Yuliia Starodubtseva’s first-round meeting with Maya Joint at the National Bank Open is a live, closely matched WTA 1000 opener, and the crowd’s 0% yes price is far below the pre-match shape of the contest. Tennis.com lists Starodubtseva at world No. 62 and Joint at No. 76, while its model has Starodubtseva only a narrow 53% projected win chance, which underlines how little separates them on paper.[1]
The main historical guide is their only previous tour-level meeting, which Starodubtseva won in three sets at Nottingham in June after Joint took the first set.[2][15] That result matters because it shows both players can generate pressure on the other’s serve and that the matchup has already gone long once; Tennis Temple also notes Starodubtseva arrived in Toronto on a four-match losing run, a form note that keeps the upset risk live despite her better ranking.[6] Comparable cases in early-round hard-court WTA 1000 matches often turn on who is sharper in return games and first-serve percentage rather than ranking alone.[1][6]
For traders, the key catalysts are simple: whether the match is played on schedule, whether the Toronto order of play holds, and whether either camp reports fitness or withdrawal news before first serve. The National Bank Open’s results page had the match listed for 3 August, with Sportschau still showing the fixture on the 4 August live board, which is the sort of scheduling drift that can matter in markets where a no-contest or delay beyond seven days settles at 50-50.[4][18] A late walkover, rain interruption, or a change to the order of play would be more market-moving here than any broad tournament narrative.[4][18]
Methodology
Sports-specific comparison page for National Bank Open: Yulia Starodubtseva vs Maya Joint. 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
- 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.
- 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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