Sion: Gerard Campana Lee vs Alex Marti Pujolras

Platform comparison

Market context

Gerard Campana Lee faces Alex Marti Pujolras in a Sion-based tennis match originally scheduled for 18 August 2026. The current crowd-implied probability sits at 0% for Campana Lee, suggesting near-unanimous backing of Pujolras or extreme uncertainty about match completion. With settlement occurring 7 August 2026, any delay beyond 25 August triggers a 50-50 resolution, creating a structural incentive for traders to monitor fixture stability closely.

The 0% reading is unusual for a head-to-head tennis market and warrants scrutiny against comparable lower-tier ATP or Challenger events. When consensus clusters at extremes on Swiss circuit matches, it typically reflects either a significant ranking disparity, recent form divergence, or withdrawal risk rather than genuine certainty. Campana Lee's career trajectory and recent results against Pujolras—if available—would normally anchor expectations; the absence of trading activity suggests limited public information on both players' current standing or recent performances in 2026.

Traders should track official Sion tournament updates and both players' injury or withdrawal announcements through the ATP calendar. Swiss summer fixtures occasionally face rescheduling due to weather or venue constraints, and any postponement beyond the 7-day window would force resolution to 50-50 regardless of form. Recent ATP Challenger draws have seen elevated withdrawal rates post-injury, particularly in August fixtures. Confirmation of both players' participation and fitness status in the week preceding 18 August will be critical to assessing whether the current probability reflects genuine dominance or simply reflects low liquidity and incomplete information.

Methodology

We track Sion: Gerard Campana Lee vs Alex Marti Pujolras 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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.