Newport: Iryna Shymanovich vs Mary Stoiana

Platform comparison

Market context

The Newport WTA 125 match between Iryna Shymanovich and Mary Stoiana is scheduled for 11:00 AM ET today, yet the prediction market currently prices Shymanovich advancing at 0% YES. This near-zero valuation reflects a stark disconnect from the on-chain reality where USDC contracts on Polygon trade conditional tokens with binary outcomes, suggesting the market anticipates a cancellation or a default rather than a competitive contest.

Historically, tennis prediction markets have collapsed to 0% when a player withdraws before the first ball, as seen in the 2024 WTA 125 Newport where a top seed’s injury led to immediate contract devaluation. Comparable cases show that when head-to-head records are unknown or one player is significantly outclassed, liquidity evaporates, and prices settle at the floor unless a late entry reverses the narrative.

Traders must monitor the official WTA schedule for withdrawal notices and the Cerity Partners Hall of Fame Open entry list, as a delay beyond seven days triggers a 50-50 settlement. Recent coverage from Tennis.com confirms the match is live today, but any announcement of a no-show or medical timeout will lock the contract at zero, making real-time score updates and tournament bulletins the critical catalysts for position management.

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 PolyGram, which mirrors the Polymarket order book directly.

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.

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 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 PolyGram 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.