Roland Garros ATP: Sebastian Baez vs Roman Andres Burruchaga

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Market context

Sebastian Baez and Román Andrés Burruchaga are scheduled to meet in the first round of Roland Garros on 24 May 2026. Polymarket currently prices Baez's advancement at 1% on the USDC/Polygon conditional token market, implying near-certainty for Burruchaga. This extreme skew reflects either a substantial gap in ranking or recent form data available to traders, though the settlement window extends to 31 May, allowing seven days beyond the scheduled date for the match to conclude without triggering a 50-50 resolution.

Baez, an Argentine clay-court specialist, has built his career on Roland Garros performances, reaching the second round in 2024 and holding a career record of 8–6 at the tournament. Burruchaga, also Argentine, competes at a lower ranking tier and has limited Grand Slam main-draw history. The 1% probability for Baez suggests traders are pricing in either a significant ranking disparity favouring Burruchaga or recent injury concerns affecting Baez's fitness heading into the tournament. Historical first-round upsets at Roland Garros occur in roughly 5–8% of matches involving seeded players against unranked or lower-ranked opponents, yet the conditional token structure on Polymarket has already compressed Baez's chances well below that baseline.

Traders should monitor ATP rankings updates through May, as seeding determines draw placement and potential first-round matchups. Any withdrawal announcements or injury reports from either player's camp would trigger repricing. The match's 5:00 AM ET scheduling may also affect liquidity and information flow on the contract itself, with European morning trading hours potentially shifting probabilities as Roland Garros coverage develops.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Kalshi UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

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.