Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket Legit? Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket Legit? → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Polymarket Legit? → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Polymarket Legit? → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Polymarket Legit? → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Polymarket Legit? → |
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 Polymarket Legit?.
Active sub-markets
Market context
Basavareddy and Michelsen are scheduled to meet in the opening round of Roland Garros on 27 May 2026. The current Polymarket pricing reflects zero probability for Basavareddy, with conditional tokens on Polygon trading at a floor price. This extreme skew typically emerges when one player carries substantially stronger seeding, ranking, or recent form into a Grand Slam draw, though the 0% settlement price suggests traders may be pricing in match cancellation risk or structural uncertainty around the fixture itself.
Historical precedent for American players at Roland Garros shows that unseeded or lower-ranked Americans face steep odds in early rounds against higher-ranked opponents. Michelsen, ranked in the 40s as of early 2026, would be favoured over an unranked or lower-ranked Basavareddy in such a matchup. However, the settlement window extends to 3 June, allowing seven days beyond the scheduled date for the match to conclude. Delays due to weather or court scheduling are routine at Roland Garros, particularly in May when rain interruptions are common.
Traders monitoring this contract should track official ATP draw confirmations and any player injury announcements in the fortnight before the tournament. Court assignments and weather forecasts released 48 hours prior to play will affect match timing. The USDC-denominated conditional tokens on Polygon will remain illiquid until clearer information emerges on player fitness and draw confirmation, with the 50-50 resolution clause creating a natural floor for either outcome if the match is postponed beyond the settlement window.
Methodology
We track Roland Garros ATP: Nishesh Basavareddy vs Alex Michelsen 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
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 Polymarket Legit?, 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.
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