Roland Garros ATP: Matteo Berrettini vs Francisco Comesana

Platform comparison

Active sub-markets

Market context

Matteo Berrettini, the Italian seventh seed and 2021 Wimbledon finalist, faces Francisco Comesana, an Argentine qualifier ranked outside the top 100, in the opening round of Roland Garros on 30 May 2026. Berrettini's seeding and clay-court pedigree—he reached the semi-finals at Roland Garros in 2021—position him as the clear favourite in a matchup against an opponent with minimal Grand Slam main-draw experience. The 100% implied probability reflects the substantial gap in ranking, surface familiarity, and tournament history between the two players.

Berrettini's recent form and injury status are the primary variables affecting this market's depth. He has managed recurring shoulder and wrist issues over the past two seasons, which occasionally forced withdrawals from clay tournaments. Any official announcement of physical concerns or late withdrawal would trigger the 50-50 settlement clause, making pre-match medical updates critical watch points. Comesana, meanwhile, has shown modest improvement on the Challenger circuit but has not demonstrated the consistency required to trouble seeded players at major tournaments.

The market's 100% probability reflects both the structural mismatch and the typical liquidity patterns on deposit-heavy platforms. Traders using SEPA transfers or Klarna's deferred payment rails often enter positions on heavily favoured outcomes to lock in small but certain returns before settlement, creating book depth on the YES side. Withdrawal friction—particularly for traders seeking to exit positions via USDC or alternative rails—can suppress late-market repricing even if injury news emerges closer to the match date.

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

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 Polymarket Klarna UK, 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.

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 it cost to trade on Polymarket Klarna UK?

Zero. Polymarket Klarna UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Klarna UK 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.