Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets → |
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 Best Prediction Markets.
Active sub-markets
Market context
The market centres on a **Berlin quarter-final** between Alexandra Eala and Elina Svitolina, and the current crowd-implied price of **0% YES** is far below what external tennis previews suggest. Match coverage ahead of the meeting described Svitolina as the favourite, even after Eala’s upset of Elena Rybakina in the previous round, while WTA tournament listings and live-score pages confirm the pairing as an active quarter-final on grass[2][3][4].
That gap matters because this is a classic *form-versus-resume* spot. Eala’s recent run, including the Rybakina win, is the kind of fresh result that can move short-term perception, but Svitolina’s higher standing and broader tour record are why public-facing previews still lean her way[2][3]. For comparison with other tennis contracts, prediction markets can sometimes sit at extremes when the underlying fixture is close to start time but the bracket status, retirement risk, or scheduling uncertainty is still unresolved; in this case, a 0% price implies either a strong assumption that Eala will not advance or a misread of the live event structure.
Traders should watch for three catalysts: official order-of-play changes, any injury or medical-time-out news, and whether the match is completed rather than interrupted. The market rules mean a no-contest, tie, or delay beyond seven days pushes settlement to 50-50, so the biggest non-performance risk is an abandonment after the scheduled slot rather than a straightforward winner call. Recent tournament and live-score coverage show the match was actively being tracked as a quarter-final, which reduces scheduling ambiguity but does not remove weather or court-delay risk[2][4][5].
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.
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 Best Prediction Markets, 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?
- Best Prediction Markets 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.
- 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 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 Grass Court Championships: Elina Svitolina vs Alexan… on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
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