Bastad: Moyuka Uchijima vs Irene Burillo Escorihuela

Platform comparison

Market context

The underlying event is a WTA 125K Round of 16 tennis match between Moyuka Uchijima and Irene Burillo Escorihuela at the Bastad tournament in Sweden, scheduled to begin on 8 July 2026. Bookmakers and analyst models consistently identify Uchijima as the clear favourite, with moneyline odds of 1.32 against Burillo’s 3.05, implying a win probability near 77% for the Japanese player[1][4]. This contrasts sharply with the prediction market’s current crowd-implied probability of 0% for Uchijima advancing, a divergence so extreme it suggests either a data error, a liquidity freeze, or a mispricing that does not reflect the consensus view across sportsbooks and statistical platforms[1].

Historically, such a 0% implied probability in a live market where one player holds a 77% projected win chance is unprecedented in comparable WTA events, where even heavy underdogs rarely see implied probabilities drop below 15% unless the match is abandoned or a player is injured before play[1][4]. In head-to-head history, Uchijima has won both previous sets against Burillo, reinforcing the market’s trust in her reliability[2]. Traders should monitor official WTA match start confirmations, any late injury reports, and real-time odds movements on FanDuel or Sofascore, as these will signal whether the 0% line is a genuine market signal or an anomaly[3][7]. A recent WTA official update confirms the match is listed as upcoming with no cancellations noted, further highlighting the oddity of the prediction market pricing[8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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

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.