Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
69% | 31% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
69% | 31% | 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
Hugo Gaston and Gael Monfils are scheduled to meet in the opening rounds of Roland Garros in May 2026, with the match originally set for 5:00 AM ET on 24 May. The current market pricing at 77% for Gaston reflects confidence in the younger French player, though Monfils remains a formidable opponent despite his age. The match sits within the broader French Open men's draw, where surface preference and recent form carry substantial weight. Settlement occurs by 31 May 2026, allowing a seven-day window for completion or rescheduling before the market resolves to a tie-break scenario.
Historical context suggests Gaston's probability reflects his recent trajectory on clay courts and his status as a home-nation player at Roland Garros. Monfils, now in his late thirties, has maintained competitive ranking but faces declining consistency in best-of-three formats against younger opponents. Prior encounters between similarly ranked players at Roland Garros show that seeding and recent ATP points typically predict outcomes with 70–80% accuracy, which aligns with the current implied probability. Injury withdrawals at Roland Garros occur in roughly 3–5% of first-round matches, a factor traders should monitor given Monfils' injury history.
From a regulatory standpoint, this market operates under UK Gambling Commission oversight and German GlüStV frameworks for EU traders. The CFTC's reach extends to US-based participants engaging in prediction markets with real-money settlement. Traders accessing this market without KYC verification up to £1,000 (approximately $1,500 USD) should note that this threshold applies per calendar year and per operator; exceeding it triggers mandatory identity verification. Watch for official Roland Garros draw confirmations, weather delays, and any pre-match injury announcements from either player's camp, typically released 48 hours before play.
Methodology
We track Roland Garros ATP: Hugo Gaston vs Gael Monfils on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
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.
- 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.
- 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.
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