National Bank Open: James Duckworth vs Alex de Minaur

Platform comparison

Market context

Alex de Minaur’s lead over James Duckworth remains the main feature of this match-up, with the pair’s head-to-head standing at 2-0 in favour of de Minaur and both previous meetings also going his way in straight sets. The most recent clash came at Wimbledon in 2024, where de Minaur won 7-6, 7-6, 7-6, while their earlier ATP meeting in Atlanta in 2022 was a 6-4, 6-4 result. That history helps explain why the crowd has this priced as a low-probability Duckworth upset at 13% YES. [1][4][11]

The market also sits against a wider performance gap. Tennis.com lists de Minaur at world No. 7 and Duckworth at No. 86 for this tournament, which is consistent with de Minaur being the clearer favourite on paper. Season and recent form tables across the available tennis databases also point to de Minaur carrying the stronger win rate and return numbers, while Duckworth’s path is more dependent on serving well and keeping the match close on hold-heavy stretches. [12][9][6]

For traders, the main catalysts are practical rather than tactical: confirmation that the Round 2 match actually starts, any revised order of play from the National Bank Open, and whether weather or scheduling backlog pushes the fixture past the 7-day settlement trigger. The market only resolves 50-50 if the match is cancelled, tied, or delayed beyond seven days without a winner, so late tournament scheduling matters as much as the on-court result. Live draw and match listings already show the fixture as part of the August 4 programme, but any change to that status is the key thing to watch. [12][8]

Sources: 1 · 2 · 3 · 4 · 5

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

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

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.

Do I need to KYC for this market?

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