National Bank Open: Alexei Popyrin vs Thiago Agustin Tirante

Platform comparison

Market context

The match is Alexei Popyrin against Thiago Agustín Tirante in the National Bank Open, played on an outdoor hard court in Montreal, with the tournament listing it as a third-round meeting. The market’s **YES** share resolves to Popyrin advancing, while a **NO** share resolves to Tirante advancing; if the match is not completed in the market’s settlement terms, it falls back to 50-50 rather than picking a winner.[4][12]

A crowd-implied probability of **56% YES** points to a fairly tight contest, not a strong consensus. That fits the broader pre-match picture: the players had no prior head-to-head record, and several preview pages treated it as close to even, with model-based projections around 54-55% for Popyrin and one tennis preview even giving Tirante a slight edge.[3][7][16][18] For a newcomer to prediction markets, that means the price is reflecting a modest lean towards Popyrin, not certainty.

The main catalysts are straightforward: whether the match is actually played, whether the start time changes, and whether either player withdraws or the event schedule is reshuffled. The National Bank Open page showed the fixture as upcoming on 7 August in Montreal, and live-score listings placed the scheduled start around 16:30 UTC, which is the kind of timing traders watch because late changes can affect whether a market settles on a winner or on the no-contest rule.[1][4][6] In practical terms, the key dependency is simple: Popyrin must win on court for **YES** to pay out, while any Tirante win pays **NO**.[4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Alexei Popyrin vs Thiago Agustin Tirante across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Market UK, which mirrors the Polymarket order book at 0% fees.

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.

UK Frequently Asked Questions

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.

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%.