Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Scam?) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| Samsun: Gabi Boitan vs Gabriel Debru Set 1 Winner | 100% |
| Samsun: Gabi Boitan vs Gabriel Debru Total Sets: O/U 2.5 | 100% |
| Samsun: Gabi Boitan vs Gabriel Debru Set 1 O/U 8.5 | 100% |
| Samsun: Gabi Boitan vs Gabriel Debru Match O/U 21.5 | 100% |
| Samsun: Gabi Boitan vs Gabriel Debru Set 1 O/U 9.5 | 100% |
| Samsun: Gabi Boitan vs Gabriel Debru Match O/U 22.5 | 100% |
| Samsun: Gabi Boitan vs Gabriel Debru Match O/U 23.5 | 100% |
| Samsun: Gabi Boitan vs Gabriel Debru | 0% |
| Samsun: Gabi Boitan vs Gabriel Debru Set 2 Winner | 0% |
| Samsun: Gabi Boitan vs Gabriel Debru Set 2 O/U 8.5 | 0% |
| Samsun: Gabi Boitan vs Gabriel Debru Set Handicap +/-1.5 | 0% |
| Samsun: Gabi Boitan vs Gabriel Debru Set Handicap +/-1.5 | 0% |
| Samsun: Gabi Boitan vs Gabriel Debru Set 2 O/U 9.5 | 0% |
| Samsun: Gabi Boitan vs Gabriel Debru Set 1 O/U 10.5 | 0% |
| Samsun: Gabi Boitan vs Gabriel Debru Set 2 O/U 10.5 | 0% |
Market context
Polymarket's conditional token structure currently prices Boitan's advancement at zero, reflecting either minimal trading activity or a consensus view that the match carries substantial execution risk. The Samsun event—a lower-tier professional tennis fixture scheduled for 27 July 2026—sits in a calendar window where scheduling disruptions and player withdrawals occur with measurable frequency. The 0% YES probability on-chain suggests traders either lack confidence in the match occurring as scheduled or view Debru as heavily favoured, though the absence of meaningful order flow makes the true market sentiment difficult to parse from USDC positions alone.
Historical precedent from ATP Challenger and ITF-level tournaments shows that matches at this tier experience cancellation or delay rates between 8–15%, particularly when scheduled at unconventional times (the original 3:00 AM ET slot is notably early for European venues). Comparable fixtures in Turkish venues have faced weather-related postponements and administrative delays that extend beyond the seven-day resolution window, which would trigger the 50-50 settlement clause. The current zero probability may therefore underweight tail risk rather than reflect genuine confidence in either player's advancement.
Traders should monitor official ATP or ITF tournament updates in early July for any draw confirmations, player injury reports, or schedule adjustments. Recent precedent from 2025 Challenger events shows that venue-specific issues—particularly in secondary markets—often emerge only days before play. The settlement window closes 3 August 2026, allowing minimal buffer for delayed matches, making schedule adherence the primary catalyst for this contract's resolution path.
Methodology
We track Samsun: Gabi Boitan vs Gabriel Debru 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
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Scam? trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- 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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