Pronóstico: Wimbledon WTA: Irina-Camelia Begu vs Katie Swan

Platform comparison

Market context

The on-chain contract for the Irina-Camelia Begu versus Katie Swan Wimbledon WTA match currently sits at a 0% implied probability for Begu advancing, a stark divergence from traditional bookmakers who view this as a near-even contest with Begu favoured at roughly 49% and Swan at 51%[1][2]. This pricing anomaly on Polymarket, settled in USDC on the Polygon network using conditional tokens, suggests the market is either anticipating a pre-match withdrawal or has misread the cancellation rules which default to a fair price if no ball is played[3].

Historically, such extreme zero-pricing in tennis prediction markets has occurred when a player withdraws before the first serve, triggering a resolution that voids the directional bet rather than awarding a winner[3]. In comparable WTA cases, a 0% price often precedes a walkover announcement, where the market resolves to a 50-50 split if the match never commences, rendering the directional position worthless until official confirmation arrives.

Traders must monitor the official WTA schedule and any late injury updates from the players’ camps, as a withdrawal before the 6:00am ET start time would immediately shift the settlement logic to a fair price[4]. Recent coverage from TennisTemple highlights the age and ranking disparity, with Begu at 35 and ranked 211 versus Swan at 27 and ranked 196, factors that could influence a late withdrawal if Begu is physically compromised[10]. The settlement window closing on 6 July 2026 means any delay beyond seven days without a winner also triggers the 50-50 resolution, making the timing of the official start signal the critical catalyst[3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: Wimbledon WTA: Irina-Camelia Begu vs Katie Swan across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

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.

Do I need to KYC for this market?

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