Roland Garros ATP: Francisco Cerundolo vs Hugo Gaston

Platform comparison

Active sub-markets

Market context

Francisco Cerundolo and Hugo Gaston are scheduled to meet in the opening round of Roland Garros on 26 May 2026. The current crowd-implied probability sits at 0% for Cerundolo, suggesting the market has assigned near-certain victory to Gaston. This represents an extreme consensus position that warrants scrutiny given the typical volatility of early-round clay-court matchups and the relative ranking stability between players in this tier.

Historically, first-round Roland Garros encounters between players ranked in the 40–80 range have produced upsets at rates substantially higher than the 0% probability line suggests. Cerundolo, an Argentine left-hander with a documented clay-court record, has previously competed in Grand Slam main draws and shown resilience in straight-set losses. Gaston, a French player with home advantage, carries expectations that can occasionally introduce pressure dynamics in early rounds. The 0% reading appears to discount Cerundolo's baseline consistency and the inherent variance of best-of-five tennis over a single day.

Key variables for traders include confirmation of both players' fitness status and seeding announcements closer to the tournament. Roland Garros scheduling can shift matches based on court availability and weather, particularly for lower-seeded matchups. Any late withdrawal or injury update would trigger resolution conditions. The settlement window extends to 2 June, providing a seven-day buffer beyond the scheduled date, which aligns with standard tournament contingencies. Current market pricing leaves minimal room for Cerundolo value despite the structural uncertainties typical of early-round clay tennis.

Methodology

We track Roland Garros ATP: Francisco Cerundolo vs Hugo Gaston on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

On Who Will Win, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win triggers a quick verification flow that finishes in minutes.

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.