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
Liudmila Samsonova, the Russian hard-court specialist ranked around 10th globally, faces Swiss player Jil Teichmann in the early rounds of Roland Garros 2026. Samsonova has built her reputation on aggressive baseline play and powerful serving, whilst Teichmann—a clay-court grinder who peaked at world number 17—relies on consistency and defensive positioning. The match is scheduled for 5:00 AM ET on 24 May, an ungodly hour that typically favours neither player but may suppress betting liquidity in Western markets. The 0% implied probability suggests either technical settlement conditions or extreme confidence in Samsonova's superiority.
Historical precedent matters here: Samsonova has won three of four career meetings against Teichmann, though two of those victories came on hard courts where Samsonova's power translates more directly. On clay, Teichmann's record improves substantially—she reached the 2021 French Open quarter-finals and has consistently performed above her ranking at Roland Garros. The current odds discount Teichmann's clay-court pedigree entirely, which may reflect either accurate market pricing or an overcorrection based on recent form data.
Traders should monitor injury reports through late May, as both players frequently carry minor complaints into clay-court events. Samsonova's serve consistency and first-round fatigue patterns are programmable variables; Teichmann's recent tournament results and clay-court preparation blocks will signal confidence levels. The 7-day delay clause and early morning scheduling create edge cases worth encoding into conditional order logic, particularly if weather disruptions emerge in Paris during that week.
Methodology
We track Roland Garros WTA: Liudmila Samsonova vs Jil Teichmann 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
- 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.
- 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.
- 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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