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 74% lean toward Zheng in this first-round Roland Garros matchup scheduled for 25 May 2026. The market reflects a substantial gap in seeding and recent form between the Polish qualifier-track player and the Chinese world top-10 competitor, though the early morning 5:00 AM ET slot introduces scheduling friction that occasionally reshuffles expectations in clay-court tennis.
Zheng's trajectory since her 2023 Australian Open breakthrough has established her as a consistent Grand Slam performer, whilst Chwalinska remains in the developmental phase of her career with limited main-draw experience at majors. Historical precedent suggests unseeded or low-ranked players breach this probability threshold at Roland Garros roughly 20–25% of the time when facing top-20 opposition, though clay-court specialists occasionally outperform their rankings. The 26% price sits near the baseline expectation for such pairings, leaving minimal edge for contrarian positioning unless Chwalinska's recent ITF or lower-tier results show unexpected momentum.
Traders should monitor the official Roland Garros draw confirmation and any late withdrawal announcements, which occasionally shift conditional token liquidity sharply. Weather delays on the Paris clay courts—common in late May—could trigger the market's 7-day resolution clause if the match extends beyond 1 June without completion. Zheng's injury status and her performance in warm-up events immediately before Roland Garros will provide the most concrete catalyst for repricing before settlement.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.
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?
- 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 does it cost to trade on PolyGram?
- Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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
Live order book, 0% fees, USDC settlement in seconds.
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