Istanbul 2: Antoine Ghibaudo vs Ilia Simakin

Platform comparison

Market context

Antoine Ghibaudo’s match against Ilia Simakin is the underlying event here, and the market’s 0% YES implies the current feed is treating a Ghibaudo win as effectively unpriced. That is consistent with Ghibaudo being a low-profile Challenger-level player rather than an established ATP main-draw regular: he reached a career-high singles ranking around No. 287 in May 2026, with later listings placing him closer to the low 300s.[1][3][14] For programmatic trading, this is the sort of market where a bot should first verify the scheduled fixture exists in the live order book, then reconcile player IDs, draw status, and the competition stage before submitting conditional orders.

Historical context also matters because Ghibaudo’s recent record shows a player who has been competitive on the developmental circuit without yet sustaining top-level results. Tennis Explorer shows a broadly even 2026 win-loss profile, while ATP and Roland Garros profile pages confirm no ATP titles and only a very small sample at main-tour level.[6][1][3] In practical terms, markets like this often move less on reputation than on whether the draw is actually intact, whether the match is still on the published schedule, and whether either player has already progressed by walkover or retirement. A zero-implied price can therefore reflect either genuine doubt about participation or a stale book that has not incorporated the latest draw state.

The key catalysts to monitor are official order-of-play updates, withdrawal notices, and any change in start time, because this market settles to 50-50 if the match is cancelled, ends level, or slips more than seven days beyond the scheduled date without a winner.[1][3] A power-user workflow would poll the tournament schedule, then cross-check live score or draw feeds for “walkover”, “retirement”, or “not before” changes before placing any copy-traded or automated position. If the event is still listed but the players are not on court by the published window, the settlement mechanics matter as much as the tennis outcome.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Istanbul 2: Antoine Ghibaudo vs Ilia Simakin 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.

UK Frequently Asked Questions

Is this market available outside the US?

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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.

Is Polymarket legal in the UK?

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How do I deposit on Polymarket from the UK?

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