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
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro | 100% YES | 0% NO |
| Completed Match | 100% YES | 0% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Set 1 Winner | 100% YES | 0% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Set 1 O/U 8.5 | 100% YES | 0% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Set 1 O/U 9.5 | 0% YES | 100% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Match O/U 21.5 | 0% YES | 100% NO |
Market context
This market refers to the tennis match between Mirra Andreeva and Fiona Ferro in the Roland Garros WTA, originally scheduled for May 24, 2026 at 5:00AM ET. This market will resolve to 'Mirra Andreeva' if Mirra Andreeva advances against Fiona Ferro. This market will resolve to 'Fiona Ferro' if Fiona Ferro advances against Mirra Andreeva. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will
Methodology
This page tracks Roland Garros WTA: Mirra Andreeva vs Fiona Ferro across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. PolyGram routes every trade through to Polymarket — at 0% fees.
Resolution & payout
Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.
Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.
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.
- 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.
- 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: Mirra Andreeva vs Fiona Ferro on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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