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
Market context
Gianluca Cadenasso and Leandro Riedi are due to meet in Roland Garros qualifying, with the market hinging on which player advances from the tie. The crowd-implied 0% YES reading is not a sporting view of the match so much as a sign that the contract has not yet been repriced around the live event state; for these tennis settlement markets, the decisive point is whether a winner is recorded before the 7-day deadline, otherwise the contract falls back to 50-50. In comparable Grand Slam qualifying ties, especially where one player is a clear exchange or bookmaker favourite, pricing often moves sharply only once the match is live and the scoreboard confirms who is controlling serve and return.
The main trader catalyst is simple: whether the match is completed and officially completed within the settlement window. SofaScore listed the fixture at Court 8 in Paris, while ESPN showed Riedi’s qualifying run through Liam Broady and the scheduled second-round meeting with Cadenasso, which indicates the tournament has already advanced to the relevant stage. Pre-match previews were leaning towards Riedi, with market prices around the mid-1.5s to low-1.7s, but tennis qualifying can still turn on weather delays, order-of-play changes, or a retirement after the first ball. For a crypto-native market, the practical angle is that USDC settlement should only follow once the result is formally available, so the main risk is administrative delay rather than price discovery on-chain.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- 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.
- What does it cost to trade on PolyGram?
- Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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.
- 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, Qualification ATP: Gianluca Cadenasso… on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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