Wimbledon ATP: Karen Khachanov vs Billy Harris

Platform comparison

Market context

Karen Khachanov, the world No. 22 and two-time Wimbledon quarterfinalist, has already defeated Billy Harris, the 155th-ranked British qualifier, in their scheduled Round 1 match at Wimbledon on 30 June 2026, with a final score of 3-1 (6-3, 5-7, 6-3, 6-3)[5]. This result renders the prediction market for Khachanov advancing against Harris effectively settled, explaining the current crowd-implied probability of 0% for the "YES" outcome, as Khachanov has already advanced[1].

Historically, markets priced at 0% before a match concludes often reflect either a completed event or a walkover, as seen in Robinhood’s conditional token rules where pre-match cancellations resolve to fair price rather than a binary outcome[2]. In this case, the match has been played and completed, meaning the conditional tokens on the Polygon network, settled in USDC, will resolve to "Karen Khachanov" without further on-chain action, as the result is already recorded on-chain and in official ATP databases[5].

Traders should monitor the official ATP settlement confirmation and any potential appeals or score corrections, though such delays are rare in Grand Slam singles matches[8]. No further catalysts are expected, as the match outcome is final, and the settlement window ending 6 July 2026 will simply formalise the existing result[2]. The market’s 0% probability is not a forecast but a reflection of a concluded event, making further trading irrelevant.

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 Kalshi UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi UK 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.