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
Julia Grabher and Rebecca Sramkova are scheduled to meet in the opening round of the Roland Garros women's draw on 25 May 2026. The Austrian Grabher, ranked outside the top 100, faces Slovakia's Sramkova in what amounts to a qualifier-level fixture at the French Open. The 100% implied probability reflects either extremely limited liquidity on the market or a technical settlement condition—the match has not yet occurred, and both players remain active on the professional circuit with no public injury reports or withdrawal notices as of the settlement window opening.
Historical precedent suggests early-round Roland Garros matches between lower-ranked players rarely fail to complete. Cancellations at the French Open are uncommon outside weather delays, and the seven-day grace period built into the market's resolution criteria accommodates typical tournament scheduling. Neither player has a documented history of late withdrawals or match abandonment. The 100% reading likely reflects minimal trading volume rather than genuine certainty about the outcome; such extreme probabilities on unplayed matches typically indicate thin order books or a single large position.
Traders should monitor the official Roland Garros draw confirmation and any player injury announcements through the ATP/WTA injury tracker in the week preceding 25 May. Court assignments and weather forecasts become material 48 hours before play. Settlement hinges on match completion by 1 June 2026; any delay beyond that date without a determined winner triggers the 50-50 resolution clause. USDC settlement will occur once the tournament's official results are published by the governing body.
Methodology
This page reads Roland Garros WTA: Julia Grabher vs Rebecca Sramkova on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed for comparison. Every CTA routes to PolyGram, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
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.
- Is this market available outside the US?
- PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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 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 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: Julia Grabher vs Rebecca Sramkova on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
Trade on PolyGram →