Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) 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 |
|---|---|
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos | 100% |
| Completed Match | 100% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set 2 Winner | 100% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set 1 O/U 8.5 | 100% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set 1 Winner | 100% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set Handicap +/-1.5 | 100% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set 1 O/U 9.5 | 100% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set 2 O/U 8.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Match O/U 21.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set 2 O/U 9.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Total Sets: O/U 2.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set 2 O/U 10.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set Handicap +/-1.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Match O/U 22.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Set 1 O/U 10.5 | 0% |
| Prague 2: Chun-Hsin Tseng vs Norbert Gombos Match O/U 23.5 | 0% |
Market context
Chun-Hsin Tseng, the Taiwanese qualifier ranked outside the ATP top 100, faces Slovak journeyman Norbert Gombos in an early-round Prague 2 encounter scheduled for 21 August 2026. The 100% crowd-implied probability reflects near-certainty that the match will be completed and produce a winner, with no meaningful divergence visible across major sportsbooks or prediction platforms at present. This consensus pricing suggests minimal concern about cancellation, withdrawal, or scheduling disruption within the seven-day window preceding the 28 August settlement deadline.
Historical precedent for ATP 250 matches at Prague indicates completion rates above 98% once draw confirmation occurs. Lower-ranked qualifiers like Tseng typically have fewer external scheduling conflicts than seeded players, reducing default risk. Gombos, a veteran of 400+ ATP matches, has maintained reliable availability across his career. Neither player carries recent injury flags or documented withdrawal patterns that would justify material probability of non-completion.
Traders should monitor official ATP communications regarding weather forecasts for Prague in late August and any late-stage player withdrawals from the broader tournament draw. The Czech Republic's August climate is generally stable, with rain delays rather than cancellations the typical disruption. Confirmation of both players' participation in qualifying or main-draw rounds immediately preceding this fixture will serve as the final catalyst; any last-minute scheduling compression or player illness announcements could shift the 50-50 tie-resolution clause into play, though current conditions suggest this remains a low-probability tail event.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.
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
- 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.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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