Samsun: Paul Inchauspe vs Gabriel Debru

Platform comparison

Market context

Paul Inchauspe and Gabriel Debru are already on court in Samsun, which makes the current **0% YES** reading a live-tracking artefact rather than a clean pre-match view. Flashscore and other scoreboards show the semi-final as underway, with Debru having taken the opening set and the match still in progress, so a market keyed to “advances” will usually move only when the scoreboard state or official result feed updates.[1][3][5]

For a power-user running this programmatically, the right comparison set is not head-to-head history but outcomes under similar “match live, settlement on advancement” structures: once a player has already won the first set, conditional pricing tends to understate the remaining tail risk if the market feed is stale, but can also overstate certainty if the event later ends in retirement or abandonment. Public H2H data show no prior match-up, so there is little historical basis for a model to lean on beyond current form and tournament context.[4][9][11]

The main catalysts to watch are the tournament’s official order of play, any completion status from the live scoring provider, and whether the fixture is completed the same day or pushed outside the seven-day settlement window, which would force the 50-50 fallback under the market rules. In practice, a bot or conditional-order workflow should monitor score-state changes, retirements, walkovers, and rescheduling notices rather than relying on pre-match odds snapshots, because live tennis markets can reprice sharply on one break or a medical timeout.[1][3][13]

Sources: 1 · 2 · 3 · 4 · 5

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

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

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 Polymarket Review UK. 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 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.