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
Market context
Victoria Mboko is due to face Jaqueline Cristian in the Strasbourg semi-final, with the market heavily skewed towards Mboko. That pricing reflects her run rather than the matchup itself: she has reached this stage without dropping a set, and WTA reporting notes she improved to 15-1 against opponents outside the top 20 after beating Leylah Fernandez in straight sets. Cristian has also been efficient in Strasbourg, but she has spent more time on court, having played an extra match and dropped a set on the way to the last four.
The clearest historical guide is Mboko’s current level against lower-ranked opposition and on clay this week, rather than any direct head-to-head. There is no prior meeting, so traders are leaning on form, not precedent. Mboko’s straight-sets wins over Peyton Stearns and Fernandez suggest a cleaner path through the draw, while Cristian’s route has involved more serve exchanges and more break points faced. WTA’s match preview also frames Mboko as the stronger recent performer in the event, which helps explain why the crowd has pushed the probability to 100% YES.
For traders, the main dependencies are whether the semi-final starts on schedule and whether either player is affected by late fitness or scheduling changes after a busy week in Strasbourg. Mboko’s recent form has been built on quick, controlled wins, so any sign of a longer, physically taxing match would matter. Cristian has shown resilience in rallies and on return, but she has also been broken more often than Mboko across the tournament. The market’s current extreme price leaves little room for a straightforward upset if pre-match news is calm.
Methodology
We track Internationaux de Strasbourg: Victoria Mboko vs Jaqueline Cristian 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
- 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.
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