Samsun: Paul Inchauspe vs Gabriel Debru

Platform comparison

Market context

Paul Inchauspe’s Samsun clash with Gabriel Debru is the kind of small-margin Challenger market where pricing can move sharply on sparse information. The main cross-platform split is that the prediction market is still at **0% YES** for Inchauspe, while a recent Robinhood listing showed Inchauspe around **56¢** and Debru around **45¢**, implying a far more balanced contest than the crowd price suggests.[19] Independent tennis pages also point to a modest Debru edge rather than a clear favourite: one live stats page had Debru at **57.8%** to Inchauspe’s **42.2%**, and another betting comparison listed Inchauspe near **56.9%** with Debru **43.1%**.[1][16]

Historical context argues against reading too much into the contract’s 0% print. These players have little or no head-to-head history across the sampled databases, and both have produced mixed form lines rather than a decisive class gap.[3][11] That matters because Challenger matches often trade on draw placement, surface fit and same-day conditions rather than on a strong rivalry record; in this case, any analyst consensus appears only mildly tilted one way, not strong enough to justify an extreme market price.[1][3][16]

For traders, the key catalyst is whether the match is actually completed within the settlement window, because the rules fall back to **50-50** if it is cancelled, tied, or delayed beyond seven days.[Market description] The live-score feeds already show the contest as in play, so the main dependencies are official completion, retirement handling and any scheduling shift at the Samsun event, not a fresh start list update.[2][7][13] In a contract sitting at 0% despite active match coverage, even a change in how the event is reported or whether a winner is formally advanced could matter more than pre-match probabilities.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Samsun: Paul Inchauspe 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

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.