Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
Market context
Polymarket's conditional token pair on Polygon currently prices Chwalinska's advancement at 26 cents per share, implying a 26% win probability against Zheng in their Roland Garros first-round encounter scheduled for 25 May 2026. The USDC-settled contract reflects substantial backing for the Chinese player, who enters as the clear favourite in this matchup. Settlement occurs by 1 June 2026 at 09:00 UTC, with the standard Polymarket mechanics applying: a 50-50 resolution if the match is cancelled, delayed beyond seven days without completion, or abandoned mid-play without a clear advancement.
Zheng's pricing advantage aligns with her career trajectory. The 23-year-old reached the Australian Open final in January 2024 and has consistently ranked within the WTA's top 15, whilst Chwalinska, a Polish qualifier typically operating outside the seeded positions, has limited clay-court pedigree at Grand Slam level. Historical patterns show that unseeded players advancing against top-20 opponents at Roland Garros occur in roughly 20–25% of matchups, placing the current 26% probability within expected ranges for this skill differential.
Traders should monitor the official Roland Garros draw confirmation and any late withdrawals or injury updates in the fortnight preceding the tournament. Zheng's recent form on clay surfaces and her performance in warm-up events will signal confidence levels; similarly, Chwalinska's qualifying results and any statement wins beforehand could shift perception of her readiness. Weather delays at Roland Garros frequently compress schedules, making the seven-day resolution window a material consideration for this early-round fixture.
Methodology
This page reviews Roland Garros WTA: Maja Chwalinska vs Qinwen Zheng across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against 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?
- On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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 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?
- Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.
- 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.
Trade Roland Garros WTA: Maja Chwalinska vs Qinwen Zheng on PolyGram
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