Palermo: Amarissa Kiara Toth vs Jennifer Ruggeri

Platform comparison

Market context

Amarissa Kiara Toth and Jennifer Ruggeri faced off in the 33rd Palermo Ladies Open on 20 July 2026, with the Italian Ruggeri securing a 2–1 victory after a match that concluded earlier than the settlement window allows for dispute. The prediction market in question, which resolves to Toth only if she advances, now carries a crowd-implied probability of 0% for a “Yes” outcome, reflecting the match’s completed status and Ruggeri’s confirmed win.

Historically, prediction markets on tennis matches that have already been played and resolved typically collapse to near-zero or near-100% implied probabilities once official results are confirmed, as seen in prior WTA events where post-match liquidity evaporates within hours. In comparable cases, such as the 2025 Palermo Open first-round matches, markets with 0% implied probability for the losing player showed no subsequent reversal, even when delayed settlement windows were in place, because governing bodies like the WTA do not overturn completed match results absent proven misconduct.

Traders should monitor the WTA’s official match archive and any delayed settlement notices from the event organiser, though no such delays have been reported for this fixture. A recent update from Tennis Majors confirms Ruggeri’s win with a 2–1 set scoreline, and no pending appeals or cancellations are listed on the WTA schedule for the Palermo event [2]. With the match already concluded and Ruggeri advancing, the 0% probability for Toth aligns with both sportsbook lines and analyst consensus, leaving no meaningful divergence between prediction-market pricing and external odds.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. 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.

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.