Wimbledon WTA: Irina-Camelia Begu vs Katie Swan

Platform comparison

Market context

The real-world event is the WTA Round of 128 tennis match between Irina-Camelia Begu and Katie Swan at Wimbledon, originally set for 29 June 2026. In prediction markets, a YES share pays out if the market resolves to the named outcome—here, that Begu advances—while a NO share pays if she does not. The current crowd-implied probability of 0% for YES suggests the market believes Begu has virtually no chance to win this specific contest, a stance that mirrors historical walkovers or pre-match withdrawals where one player is deemed unfit to compete before a ball is struck.

Comparable cases in professional tennis show that a 0% probability often precedes a match cancellation due to injury or a walkover, where the rules resolve the market to a fair price rather than a winner. Traders should monitor official WTA announcements for player fitness updates, as a withdrawal before the match starts would invalidate the 0% YES stance and trigger a fair-price resolution. Recent coverage from Sporty Trader notes the match was scheduled for 28 June, highlighting the importance of checking for schedule shifts or injury reports that could alter the outcome before play begins [2].

Dependencies include the match start signal—a ball being played—as the market remains open only after this point; if no ball is played due to injury, the market resolves to a fair price [1]. Traders must also watch for delays beyond two weeks, which would keep the market open until the rescheduled match concludes. With the settlement window ending 6 July 2026, any unresolved delay beyond this date would force a 50-50 resolution, making timely updates on player availability critical for accurate positioning.

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 Market 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.

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.

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.