Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Kalshi UK Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Kalshi UK → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Kalshi UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Kalshi UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Kalshi UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Kalshi UK → |
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 Kalshi UK.
Active sub-markets
| Completed Match | 100% YES | 0% NO |
| Wimbledon, Qualification WTA: Luisina Giovannini vs Lucrezia Stefanini | 0% Luisina Giovannini | 100% Lucrezia Stefanini |
| Wimbledon, Qualification WTA: Luisina Giovannini vs Lucrezia Stefanini Set 2 Winner | 0% Giovannini | 100% Stefanini |
| Wimbledon, Qualification WTA: Luisina Giovannini vs Lucrezia Stefanini Set 2 O/U 9.5 | 100% Over | 0% Under |
| Wimbledon, Qualification WTA: Luisina Giovannini vs Lucrezia Stefanini Set 1 O/U 10.5 | 100% Over | 0% Under |
| Wimbledon, Qualification WTA: Luisina Giovannini vs Lucrezia Stefanini Set 1 Winner | 0% Giovannini | 100% Stefanini |
Market context
The WTA Wimbledon Qualifying match between Luisina Giovannini and Lucrezia Stefanini is set to begin today at 1:00 pm on Court 5, with both players facing each for the first time in their careers. While the prediction market currently prices this contract at 100% YES for Giovannini advancing, the underlying real-world data from Tennis Tonic and BetClan strongly favours Stefanini, who is tipped to win in three sets with a 73% probability. This stark divergence between the on-chain price and the statistical reality mirrors historical cases where market sentiment detached from form, often driven by liquidity imbalances or conditional token arbitrage rather than genuine event probability.
Traders should monitor the live match outcome and any official WTA announcements regarding delays or cancellations, as the settlement window resolves to 50-50 if the match is not played or exceeds a seven-day delay. Recent odds from SportyTrader confirm Stefanini as the favourite at 1.48, suggesting the current market price may be misaligned with the actual competitive landscape. On-chain mechanics using USDC on Polygon mean that conditional tokens will settle based on the official result, so watching the first-set winner (Stefanini favoured at 69%) and total games (over 20.5) provides immediate catalysts for potential price corrections before the 2026-06-30 settlement deadline.
Methodology
We track Wimbledon, Qualification WTA: Luisina Giovannini vs Lucrezia Stefanini 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
- Is this market available outside the US?
- Kalshi UK 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.
- What does it cost to trade on Kalshi UK?
- Zero. Kalshi UK 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, Kalshi UK triggers a quick verification flow that finishes in minutes.
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