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% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Match O/U 21.5 | 100% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set 1 O/U 8.5 | 100% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set 2 O/U 8.5 | 100% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set 2 O/U 9.5 | 100% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set Handicap +/-1.5 | 100% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set 2 O/U 10.5 | 100% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard | 0% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set 2 Winner | 0% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set 1 Winner | 0% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Total Sets: O/U 2.5 | 0% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set Handicap +/-1.5 | 0% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Match O/U 22.5 | 0% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set 1 O/U 9.5 | 0% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Match O/U 23.5 | 0% |
| Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard Set 1 O/U 10.5 | 0% |
Market context
Damir Dzumhur and Mathys Erhard are due to meet in the Grodzisk Mazowiecki Challenger round of 16 on outdoor hard court, with Dzumhur listed around ATP No 102 and Erhard around ATP No 383. That ranking gap is the clearest reason the market would ordinarily lean towards Dzumhur, but it is not a guarantee: Erhard has already navigated a tighter route in the event, while Dzumhur arrives with the stronger season profile overall and the more established tour record.[1][6][15]
For historical framing, the market’s 0% YES price looks more like a live-event artefact than a pure assessment of the matchup. Available match and H2H pages indicate no meaningful prior head-to-head edge for either player, and at least one preview source gives Dzumhur a very heavy statistical edge, which is consistent with a seed-vs-underdog Challenger pairing rather than a toss-up.[7][9][15] In comparable cases, the key read is often whether the higher-ranked player is fully committed and physically sound, because Challenger outcomes can swing sharply on fatigue and late withdrawals even when rankings are far apart.[6]
The main catalysts to watch are whether the match is actually completed before the settlement window closes, and whether either player’s schedule changes because of a retirement, walkover, or delay in the Grodzisk Mazowiecki draw. Sofascore and related live listings place the match on 6 August at Central Court, which means a same-day default or postponement would matter more for settlement than the pre-match odds alone.[1][3][10] If there is no result within seven days of the scheduled date, the market rules point to a 50-50 resolution rather than a win for either side.
Methodology
Sports-specific comparison page for Grodzisk Mazowiecki: Damir Dzumhur vs Mathys Erhard. 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.
UK Frequently Asked Questions
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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