Cincinnati Open: Juan Manuel Cerundolo vs Felix Auger-Aliassime

Platform comparison

Market context

Polymarket has this contract trading at 25% YES, which makes Juan Manuel Cerúndolo the clear outsider against Félix Auger-Aliassime in Cincinnati. The market settles on the player who advances, with a 50-50 outcome only if the match is not played, ends level, or is delayed beyond seven days without a winner, and the on-chain position is represented through USDC-settled conditional tokens on Polygon.

The price is easy to benchmark against the recent shape of the matchup. Cerúndolo already leads the head-to-head 1-0, but that came as an upset rather than a baseline read, and current match previews still have Auger-Aliassime around the high-70s to low-80s in win probability, broadly consistent with the contract’s 25% YES line. Auger-Aliassime is also the higher-ranked player and second seed, which normally matters on a hard court, though Cerúndolo has been competitive enough in earlier rounds to keep the market from pricing this as a routine short.

The main catalysts are straightforward: the official order of play, any late withdrawal or injury update, and whether the match is completed inside the settlement window. Auger-Aliassime’s recent return from a back issue adds some schedule risk, while Cincinnati’s draw has already seen withdrawals elsewhere this year, showing how quickly tennis contracts can reprice on lineup news. If the match is moved, suspended, or not staged as scheduled, traders will need to watch the seven-day rule closely because that determines whether the market resolves to a normal winner or flips to 50-50.

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Methodology

We track Cincinnati Open: Juan Manuel Cerundolo vs Felix Auger-Aliassime across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

UK Frequently Asked Questions

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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.

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