Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
0% | 100% | 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
| Internazionali BNL d'Italia: Caty McNally vs Iga Swiatek | 0% YES | 100% NO |
| Internazionali BNL d'Italia: Caty McNally vs Iga Swiatek Set 1 Winner | 0% YES | 100% NO |
| Internazionali BNL d'Italia: Caty McNally vs Iga Swiatek Total Sets: O/U 2.5 | 100% YES | 0% NO |
| Internazionali BNL d'Italia: Caty McNally vs Iga Swiatek Match O/U 21.5 | 100% YES | 0% NO |
| Internazionali BNL d'Italia: Caty McNally vs Iga Swiatek Set 1 O/U 8.5 | 0% YES | 100% NO |
| Internazionali BNL d'Italia: Caty McNally vs Iga Swiatek Match O/U 22.5 | 100% YES | 0% NO |
Market context
This market refers to the tennis match between Caty McNally and Iga Swiatek in the Internazionali BNL d'Italia, originally scheduled for May 8, 2026 at 5:00AM ET. This market will resolve to 'Caty McNally' if Caty McNally advances against Iga Swiatek. This market will resolve to 'Iga Swiatek' if Iga Swiatek advances against Caty McNally. 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 wil
Methodology
We track Internazionali BNL d'Italia: Caty McNally vs Iga Swiatek 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.
- 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.
- 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.
- 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 Internazionali BNL d'Italia: Caty McNally vs Iga Swi… on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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