Wimbledon ATP: Tallon Griekspoor vs James Duckworth

Platform comparison

Market context

The real-world event is the first-round Wimbledon ATP match between Tallon Griekspoor and James Duckworth, originally slated for 29 June 2026 but now live on 30 June at Court 6. Griekspoor holds a 4–2 main-draw record at Wimbledon, while Duckworth has not won a main-draw match there since 2021, a stark historical disparity that frames the current 0% crowd-implied probability for Duckworth advancing. Comparable cases from recent years show that players with no Wimbledon main-draw wins in five years rarely overturn such odds, especially against opponents with a positive grass-court record, making the market’s extreme skew a rational reflection of form rather than an anomaly.

For a power-user approaching this programmatically, the key catalysts are live score updates, set outcomes, and any official withdrawal announcements, as conditional orders should trigger on Duckworth winning the first set—a scenario TAB currently prices at $1.83 (60% probability) despite the overall odds[2]. Recent predictive analytics models give Griekspoor a 65–70% chance of victory, with betting odds in Australia confirming Griekspoor at $1.44 and Duckworth at $2.75, reinforcing the need to monitor first-set results as the primary signal for market movement[2][5]. Traders should also watch for delays beyond seven days, which would resolve the market to 50–50, though current live data shows the match is underway with no indication of cancellation[4][6].

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 Polymarket App UK, 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.

FAQ

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.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

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.