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 | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
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 is pricing Gabi Boitan's chances of advancing past Gabriel Debru at the Samsun event at zero, reflecting either minimal trading activity or a strong consensus that Debru will prevail. The match was originally scheduled for 27 July 2026 at 3:00 AM ET, with settlement contingent on a decisive result by 3 August 2026. On-chain, this conditional token structure means traders holding YES shares receive full payout only if Boitan wins outright; any cancellation, tie, or delay beyond seven days triggers a 50-50 split of the USDC collateral across both sides.
The zero probability reading warrants scrutiny given that both players operate at similar career levels on the professional circuit. Boitan, a Romanian competitor, and Debru, a French player, have limited head-to-head history that would justify absolute certainty. Historical patterns in lower-tier ATP and challenger events show that pricing anomalies often reflect low liquidity rather than genuine predictive confidence. When markets show extreme probabilities on Polygon-based conditional tokens, the typical driver is sparse order books rather than information asymmetry.
Traders should monitor the official ATP or ITF tournament schedule for confirmation that Samsun proceeds as planned, particularly given the early morning scheduling. Recent fixture delays in regional European tournaments have occasionally extended beyond the standard settlement window. Any withdrawal announcements from either player, weather disruptions affecting the clay court surface, or schedule compression would trigger the 50-50 resolution clause. Current odds offer no margin for error, making position sizing critical until liquidity improves.
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 PolyGram, 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
- 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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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 Samsun: Gabi Boitan vs Gabriel Debru on PolyGram
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