Croatia Open, Qualification: Andrea Guerrieri vs Federico Agustin Gomez

Platform comparison

Market context

The Croatia Open Qualification match between Andrea Guerrieri and Federico Agustin Gomez in Umag has already begun on Court 1, with the contest scheduled to start at 15:00 UTC today. Despite the match being live, the Polymarket contract for Guerrieri advancing currently sits at a **0% implied probability**, suggesting the crowd expects Gomez to win or the match to be voided under the settlement rules. This pricing is starkly disconnected from traditional betting markets, where Guerrieri is the clear favourite with initial odds of **1.57** compared to Gomez’s 2.22, and where Tennis Tonic explicitly picks Guerrieri to win in three sets [3].

Historically, such a **0% price** on a live event where the favourite holds a statistical edge usually indicates a technical glitch, a delayed settlement trigger, or a belief that the match will not reach a decisive winner before the seven-day delay clause activates. In comparable on-chain tennis markets, prices at zero often resolve to the 50-50 tie condition if a player retires early or if the tournament cancels the round entirely, rather than reflecting a genuine belief in the underdog’s victory. The discrepancy between the **1.57** bookmaker odds and the **0%** on-chain price highlights a potential arbitrage opportunity if the market corrects once the match result is confirmed on-chain via Polygon conditional tokens.

Traders must monitor the **live score** updates on SofaScore and Tennis.com to confirm if Guerrieri is actually playing or if a retirement has occurred before the first set concludes [1][2]. The primary catalyst is the official ATP Tour result announcement, which will determine if the contract resolves to Guerrieri, Gomez, or the 50-50 void state. Any delay beyond the scheduled window or a cancellation notice from the Plava Laguna Croatia Open organisers would immediately trigger the 50-50 settlement, rendering the current 0% price obsolete [2]. Watch for real-time USDC liquidity shifts on the Polygon network as the match progresses, as these will signal whether the market is correcting to reflect the live odds or locking in a void outcome.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.

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.