Cervia: Andrea Guerrieri vs Max Alcala Gurri

Platform comparison

Active sub-markets

Market context

Andrea Guerrieri and Max Alcala Gurri are due to meet in the Cervia Challenger semi-final on clay, with the contest listed for 22 May 2026 and no head-to-head history on the ATP record. That makes the market more dependent on current form than rivalry trends. Public pricing is not uniform: Tennis Tonic and some comparison pages showed Guerrieri favoured at around 1.48, while Tennis Explorer listed a much tighter 1.76-1.97 line, implying a narrower edge than the outright market suggests. On a venue-specific clay event like this, Polymarket-style binary pricing can look cleaner than bookmaker odds, but Kalshi, Betfair and Smarkets may display the same view differently once fees, commission and account access are stripped out.

The main read-through is that the market has been priced as a Guerrieri lean, but not as a certainty. For context, the semi-final was already confirmed by live scores and event listings across SofaScore, Flashscore and Diretta.it, which reduces cancellation risk but leaves scheduling and completion as the key settlement variables if weather or court delays intervene. If the match starts and is unfinished, the winner advancement rule matters more than the scoreline. Traders comparing venues should also note that bookmaker decimal odds embed margin, whereas exchange prices on Betfair and Smarkets are usually quoted closer to true probability before commission; Kalshi and Polymarket differ again in how liquidity and fees affect the final executable price.

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Methodology

We read Cervia: Andrea Guerrieri vs Max Alcala Gurri from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

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.

What does it cost to trade on PolyGram?

Zero. PolyGram 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, PolyGram 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.