Cincinnati Open: Thiago Agustin Tirante vs Jan Choinski

Platform comparison

Market context

The Cincinnati Open first-round match between Argentine qualifier Thiago Agustin Tirante and Polish player Jan Choinski is scheduled for 13 August 2026 at 10:00 AM ET. The market currently reflects 100% implied probability for Tirante's advancement, suggesting either substantial pre-match information favouring the Argentine or minimal trading activity establishing a baseline. Settlement closes 20 August, allowing a seven-day buffer for delays or postponements before the market resolves to a 50-50 split.

Tirante, ranked outside the top 200, typically faces volatility in early-round matchups against similarly-ranked opponents. Choinski's recent form and head-to-head record against Tirante remain the primary historical anchors; however, qualifying-round status often introduces uncertainty into first-round predictions at Masters 1000 events. Surface conditions at Cincinnati (hard court) and recent tournament results from both players in July and early August will provide clearer indication of current fitness and form than historical rankings alone.

The key variable for traders is confirmation of both players' participation and fitness status in the 48 hours before the match. Any withdrawal due to injury, illness, or scheduling conflict would trigger the 50-50 resolution clause. Weather delays at Cincinnati are historically infrequent in mid-August, but the settlement window's seven-day extension means even significant postponements would not automatically resolve the market until after 20 August. Monitor official ATP communications and both players' social media for withdrawal announcements or injury updates closer to the scheduled date.

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 Prediction Today, which mirrors the Polymarket order book directly.

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.

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 Prediction Today. 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.

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%.