Liege: Gauthier Onclin vs Florian Broska

Platform comparison

Market context

The real-world event is a professional tennis match in Liege between Gauthier Onclin and Florian Broska, scheduled to begin at 5:00 AM ET on 9 July 2026. In prediction markets, a YES share pays out if the market resolves to the stated outcome—here, that Onclin advances—while a NO share pays if he does not. The current crowd-implied probability of 0% YES suggests traders believe Onclin is virtually certain to lose or that the match will not produce a winner for him, a stark contrast to his recent back-to-back Challenger titles in Abidjan which highlight his competitive resilience[7].

Historically, markets with 0% implied probability often precede either a player’s withdrawal, a severe injury, or a complete mismatch in ranking where the favourite is unplayable; Onclin’s career-high ATP ranking of 178 and modest 1–2 win-loss record this season may signal vulnerability against a higher-ranked opponent[3][6]. Traders should watch for official tournament announcements confirming Onclin’s participation, any late injury reports from the ATP Tour, and the final draw sheet which may reveal a significant ranking gap[6]. A recent update from the ATP Tour confirms Onclin’s current standing at 178 with 331 points, a key dependency for assessing match viability[4].

The settlement window closes on 16 July 2026, meaning any delay beyond seven days from the scheduled date without a winner will trigger a 50–50 resolution. If the match starts but is not completed, and one player advances due to the rules, the market resolves to that player. No moralising is needed on whether to trade; the facts are that Onclin’s recent form is mixed, his ranking is low, and the crowd has priced him out entirely, making this a high-risk bet on an underdog with limited recent success.

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

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

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.

Do I need to KYC for this market?

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