Winston-Salem Open: Luca Van Assche vs Aleksandar Kovacevic

Platform comparison

Market context

Polymarket is effectively pricing Winston-Salem as a dead market on Van Assche versus Kovacevic, with the contract showing 0% YES while the match has already been posted in the draw and live-score feeds as a second-round men’s singles fixture on outdoor hard courts in North Carolina.[2][5][15] On-chain, that means the contract still sits on Polygon in USDC-backed conditional tokens, but the current price implies traders are treating the outcome as already determined or very unlikely to resolve to Van Assche before settlement.

The useful context is that this is not a fresh, unseeded coin-flip but a seeded ATP 250 match between players with a limited head-to-head history and broadly similar hard-court profiles in main-draw play.[8][10] Van Assche was listed higher in the pre-match rankings, while Kovacevic was around the mid-90s, and market-priced tennis gaps like that often compress quickly once a match is actually played or removed from the schedule.[2][12] If the contest had not been completed in time, the market’s fallback rules would still matter: cancelled or unresolved matches can settle 50-50 rather than to either side.

For traders, the key catalysts are mundane but decisive: an official result, a retirement, a postponement, or a draw correction from the tournament or scoring provider.[3][6][9] The market’s original scheduled start was 25 August at 3:30pm ET, and the settlement window runs to 1 September 2026, so any administrative change before then can still move the conditional token outcome even if the court action has already been posted.[13][15]

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

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

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

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.