Newport: Iryna Shymanovich vs Mary Stoiana

Platform comparison

Market context

The WTA 125K Newport match between Iryna Shymanovich and Mary Stoiana, scheduled for 11:00 AM ET on 9 July 2026, is the underlying real-world event driving today’s prediction market. On Polymarket, this contract currently trades at 0% YES for Shymanovich advancing, reflecting a near-total market consensus that she will not win. This pricing sits on the Polygon chain, settled in USDC, and relies on conditional tokens that resolve only once the match outcome is officially confirmed by the tournament.

Historically, similar 0% pricing in tennis markets has preceded either a player withdrawal before the match or a decisive loss in the first set. In the 2025 ITF W100 event, a comparable scenario saw a player ranked outside the top 100 fail to advance after a 0–2 set loss, with the market resolving instantly to the opponent. Shymanovich and Stoiana have no prior head-to-head record since 2022, and both are competing on grass, a surface that often amplifies volatility for less experienced players.

Traders should monitor the official WTA Newport schedule for any late changes, including player withdrawals or weather delays, which could trigger the 50–50 resolution clause if the match is not completed within seven days. Recent coverage from Tennis.com confirms the match is listed as Round 2, with live broadcast details pending. Any announcement from the tournament’s official site regarding player fitness or court conditions will be the primary catalyst for price movement, as the current 0% implies no expectation of Shymanovich winning under normal conditions.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Newport: Iryna Shymanovich vs Mary Stoiana 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

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

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.