Cincinnati Open: Adam Walton vs Ignacio Buse

Platform comparison

Market context

Adam Walton’s second-round meeting with Ignacio Buse at the Cincinnati Open sits in a market where the crowd has already priced in a near-certain Walton win, but that looks far stronger than the wider market read. Pre-match sportsbooks and model pages have generally had Walton only a modest favourite, with prices around 1.57–1.67 for Walton and 2.20–2.44 for Buse, implying something closer to the low-60s than 100%.[1][2][4][10] Tennis.com’s match page also leaned Walton, while showing a far less extreme split than the prediction market’s current crowd price.[1]

That gap matters because this is a first-time ATP meeting on outdoor hard courts, where one early break or a slow start can swing pricing quickly, especially in best-of-three formats.[2][12] Comparable Cincinnati-round mismatches often settle back towards the bookmaker consensus once lineups, court assignments and live score updates are confirmed, rather than holding at a perfect-probability level.[3][6][15]

Traders should watch the order of play, any late reshuffle on Court 7, and whether the match begins on schedule or is pushed back by weather or scheduling overlap.[3][6][8][15] The market resolves to 50-50 if the match is not played at all or is delayed beyond seven days without a winner, so any official ATP or tournament update that changes the start time is material to settlement as well as price.[12][15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

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

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.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.