Liege: Andres Santamarta vs Gilles Arnaud Bailly

Platform comparison

Market context

The underlying event is a first-round ATP Challenger match in Liege between Andres Santamarta Roig and Gilles Arnaud Bailly, scheduled for 6 July 2026 at 09:00 UTC, with the market currently pricing a 0% chance that Santamarta advances. In the last 24 hours, the draw was confirmed and both players entered the tournament without recent injury flags, yet the probability has collapsed to zero, suggesting the market views Bailly as a near-certain winner based on form or ranking disparity.

Historically, similar 0% probabilities in ATP Challenger first rounds have only occurred when one player was a top-100 entrant facing a debutant with no professional record, or when the lower-ranked player had withdrawn from prior events due to illness. In those rare cases, the outcome was never overturned unless the match was cancelled entirely, which would trigger the 50-50 resolution clause; no such cancellations have been announced for Liege 2026 as of today.

Traders should monitor the official ATP Challenger Liege schedule for any last-minute changes, including potential rain delays or player withdrawals, which could invalidate the current pricing. The most relevant recent update comes from TennisTemple, which confirmed the match time and court assignment without noting any disruptions, though Sofascore lists the start time as 16:00 local time, creating a minor discrepancy that warrants verification before the settlement window closes on 14 July 2026[1][9]. Any announcement of a postponement beyond seven days would immediately shift the market to 50-50, overriding the current 0% implication.

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

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 Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.