Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) 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 |
|---|---|
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski | 100% |
| Completed Match | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Total Sets: O/U 2.5 | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set 2 Winner | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Match O/U 21.5 | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set 2 O/U 8.5 | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Match O/U 22.5 | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set 2 O/U 9.5 | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Match O/U 23.5 | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set 2 O/U 10.5 | 100% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set 1 Winner | 0% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set 1 O/U 8.5 | 0% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set Handicap +/-1.5 | 0% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set 1 O/U 9.5 | 0% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set Handicap +/-1.5 | 0% |
| Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski Set 1 O/U 10.5 | 0% |
Market context
Maks Kasnikowski’s second-round meeting with Ivan Marrero Curbelo has been live in Grodzisk Mazowiecki, and the market’s 74% YES price broadly matches the pre-match view that the Pole was the stronger player on paper. Rankings in the live feeds show Kasnikowski around ATP 233 and Marrero around ATP 356, while several bookmakers and prediction models had Kasnikowski as the clear favourite, with implied win probabilities in the mid-70s. [1][9][11]
That framing matters because challenger-level hard-court matches often move quickly once the better-ranked player lands the first break, but they are also vulnerable to swingy scorelines and retirement risk. Comparable pre-match markets on this fixture pointed to Kasnikowski in straight sets, and the live score feeds indicate the match has already been competitive enough to keep settlement sensitivity high if it is interrupted before completion. [8][10][11]
The key catalysts now are simple: whether play is officially completed, whether any retirement or walkover is recorded, and whether the result is confirmed by the tournament’s live scoring providers before the settlement window closes. The match was scheduled for Centre Court in Grodzisk Mazowiecki at 17:00 UTC, with hard-court outdoor conditions and a Round of 16 setting, so any delay to the official scoreline or an unfinished match would be the main reason the market drifts away from a clean one-player resolution. [1][4][8]
Methodology
We track Grodzisk Mazowiecki: Ivan Marrero vs Maks Kasnikowski across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
UK Frequently Asked Questions
- 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 Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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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