Newport: Jacob Fearnley vs Stefan Kozlov

Platform comparison

Market context

Jacob Fearnley faces Stefan Kozlov in the Newport Challenger on grass, a match originally set for 9 July 2026 at 6:05 PM ET, with the market currently pricing Fearnley’s advancement at 67% YES. On Polymarket, this contract trades on Polygon using USDC, where conditional tokens lock the outcome based on whether Fearnley advances; the price reflects immediate crowd sentiment rather than abstract player form.

Historically, grass-court Challengers show that players with recent qualification wins on similar surfaces often outperform their odds, yet Fearnley and Kozlov have no prior head-to-head record, making this a pure form-based read [1][6]. Comparable cases from Newport and Nottingham in 2024 show that qualifiers winning 6-2 6-4 in prior rounds tend to carry momentum into main draws, though Fearnley’s last notable win was against Mark Lajal in Nottingham, not Kozlov [2].

Traders should monitor the official ATP Challenger Newport schedule for any delay announcements or weather-related postponements, as delays beyond seven days trigger a 50-50 resolution [3][4]. Recent coverage from Tennis Tonic highlights Kozlov’s 2019 win over Garrett Johns in Little Rock, but offers no fresh insight on his current grass readiness, so the key catalyst is the live match start confirmation and any on-court injury reports [8][10].

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

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

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.

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.

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.