Warsaw: Teodora Kostovic vs Martyna Kubka

Platform comparison

Market context

Polymarket is pricing this Warsaw women’s singles match at **0% YES** on USDC-settled conditional tokens on Polygon, so the contract is effectively trading as if the market already expects a non-standard outcome or no viable resolution rather than a normal win for Teodora Kostović or Martyna Kubka. The underlying fixture was listed for the WTA 125 event in Warsaw on outdoor hard courts, with Kostović shown around WTA 146 and Kubka around WTA 187 in live match listings.[1][3]

The closest read-through from comparable data is that the matchup itself is not one-sided enough to explain a zero price. Kubka beat Kostović in their only recorded head-to-head, a straight-sets win at Leimen in February 2025, and that result is still the main direct comparison available.[2][14] That said, the current market price is being driven by the contract mechanics as much as by tennis form: if the match is cancelled, never played, or left unresolved beyond the settlement window, it can resolve to 50-50 rather than to either player.[17]

For traders, the key catalysts are simple and practical: whether the match is officially completed, whether the WTA or tournament feed confirms a winner, and whether any scheduling disruption pushes it beyond the seven-day no-winner rule in the market definition. Live score services had the match listed for 3 August with centre-court scheduling in Warsaw, which matters because delayed or abandoned early-round matches can create settlement ambiguity even when play has started.[1][10][16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Warsaw: Teodora Kostovic vs Martyna Kubka across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 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.

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.