Liege: Andres Santamarta vs Gilles Arnaud Bailly

Platform comparison

Market context

The tennis match between Andres Santamarta Roig and Gilles Arnaud Bailly in Liege, Belgium, is set to begin tomorrow at 09:00 UTC as part of the ATP Challenger tournament. Both players are 19 and 20 years old respectively, standing at 180cm, with Santamarta weighing 70kg and Bailly 78kg[5]. The market currently prices the outcome at 0% YES, implying the crowd believes a specific resolution is virtually impossible, likely due to the match being unplayed or cancelled before a winner is determined[1].

Historically, ATP Challenger events in Liege have seen matches delayed or cancelled due to weather, particularly in early July, which often triggers the 50-50 settlement clause if no winner is determined within seven days[2]. In similar low-stakes Challenger rounds, unplayed matches have resolved to the tie condition rather than a winner, especially when betting markets are absent or liquidity is thin[2]. This pattern suggests the 0% price reflects a high probability of cancellation rather than a prediction of one player’s dominance.

Traders should monitor the official ATP Challenger Liege schedule and any weather advisories for Belgium tomorrow morning, as delays beyond 7 days without a winner will force the 50-50 outcome[7]. Recent updates from Tennis.com confirm the match is scheduled for Round 1, but no betting markets are currently active, indicating limited on-chain data to validate the crowd’s extreme pricing[2]. Watch for live score feeds on Sofascore or YouTube streams, which may reveal if the match begins or is postponed before the settlement window closes on 14 July 2026[1][9].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Liege: Andres Santamarta vs Gilles Arnaud Bailly 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

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.

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 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.