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
Marina Bassols Ribera, the Spanish left-hander ranked outside the WTA top 100, faces Emiliana Arango of Colombia in an early-round Roland Garros encounter scheduled for 24 May 2026. The match forms part of the women's singles draw at the French Open, where both players will be competing for progression through the tournament bracket. Settlement occurs by 31 May 2026, allowing a seven-day window for completion or rescheduling before the market resolves to a 50-50 split.
The 100% implied probability reflects the near-certainty that one player will advance, given Roland Garros's established infrastructure and scheduling reliability. Historical data on WTA matches at Grand Slams shows cancellation or indefinite postponement remains rare; weather delays at Roland Garros typically resolve within 48 hours. Comparable early-round fixtures rarely fail to produce a winner within the settlement window, though injury retirements during play do occur and would trigger the 50-50 outcome if the match begins but remains incomplete.
Traders should monitor official Roland Garros draw confirmations and injury reports from both players' camps in the weeks preceding 24 May. Recent WTA scheduling updates and court allocation announcements typically arrive 10–14 days before tournament commencement. Bassols Ribera's recent match record and Arango's fitness status will influence market movement if either player withdraws before play begins, though such withdrawals would not settle the market—only non-commencement or incomplete play triggers the tie resolution. German GlüStV regulations and US CFTC oversight apply to this market depending on trader jurisdiction; UK-based traders under £1,500 exposure face reduced KYC requirements on this platform.
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
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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.
- 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 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.
- 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: Marina Bassols Ribera vs Emiliana… on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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