Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski | 100% |
| Completed Match | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set 1 O/U 8.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set 2 Winner | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Total Sets: O/U 2.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set 2 O/U 8.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set 1 O/U 9.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Match O/U 21.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set 2 O/U 9.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set 1 O/U 10.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Match O/U 22.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set 2 O/U 10.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Match O/U 23.5 | 100% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set 1 Winner | 0% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set Handicap +/-1.5 | 0% |
| Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski Set Handicap +/-1.5 | 0% |
Market context
Polymarket is pricing **100% YES** on Mathys Erhard here, which means the USDC-settled conditional token is effectively trading as if his win is already locked in. In practical terms, that leaves very little room for new information unless the underlying ATP Challenger match in Grodzisk Mazowiecki is altered, delayed, or voided under the contract rules.
The read-through is that this is a first-time professional meeting between players who are close enough in ranking to make a one-sided 100% print unusual but not impossible if liquidity is thin or one side has been aggressively bought up. Live listings put Erhard around ATP No. 383 and Pieczkowski around No. 643, with the match on outdoor hard courts in Poland and no prior head-to-head to anchor a historical edge.[1][2][6] For traders, the key is that a 100% price on a conditional token can reflect market consensus, but it can also reflect a very small float once most shares have been accumulated.
What matters now are event-level catalysts rather than broad tennis narratives: confirmation that the match actually begins, any court or order-of-play changes from the challenger desk, and whether either player is withdrawn, retimed, or forced into a walkover before a winner is formally recorded.[1][11] The market is also sensitive to the contract’s fallback logic, because if the match is not played, ends level, or drifts beyond the seven-day settlement window without a winner, the outcome moves to 50-50 instead of resolving to a player name. That means calendar changes, tournament scheduling updates, and official score reporting are the main things to watch on-chain, not pre-match opinion.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- 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.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
Trade Grodzisk Mazowiecki: Mathys Erhard vs Olaf Pieczkowski on PolyGram
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