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
| Birmingham: Alexandra Eala vs Nikola Bartunkova | 100% Alexandra Eala | 0% Nikola Bartunkova |
| Completed Match | 100% YES | 0% NO |
| Birmingham: Alexandra Eala vs Nikola Bartunkova Total Sets: O/U 2.5 | 100% Over 2.5 | 0% Under 2.5 |
| Birmingham: Alexandra Eala vs Nikola Bartunkova Set 1 O/U 9.5 | 100% Over | 0% Under |
| Birmingham: Alexandra Eala vs Nikola Bartunkova Match O/U 23.5 | 100% Over | 0% Under |
| Birmingham: Alexandra Eala vs Nikola Bartunkova Set 1 Winner | 0% Eala | 100% Bartunkova |
Market context
Alexandra Eala and Nikola Bartunkova are scheduled to meet at the Birmingham grass-court tournament on 7 June 2026. The Polymarket contract currently reflects a 100% implied probability for Eala's advancement, pricing USDC conditional tokens on Polygon at a level suggesting near-certainty. This extreme pricing typically emerges when one player carries a significant ranking advantage, recent form edge, or when market liquidity remains thin relative to the event's actual uncertainty.
Eala, the Filipino player, has established herself as a consistent WTA competitor with steady progression through qualifying and main-draw rounds at established tournaments. Bartunkova, the Czech player, competes at a lower ranking tier and has historically struggled to maintain consistent results against higher-ranked opposition. Historical precedent suggests that when grass-court matches pit a top-100 player against a lower-ranked opponent in early rounds, the favourite's win rate typically exceeds 75–80%, though upsets remain possible given grass's variable bounce and the compressed nature of early-round scheduling.
Traders should monitor the official WTA Birmingham draw confirmation and any weather disruptions to the grass courts, which can favour serve-dominant or unconventional playing styles. The settlement window closes 14 June at 10:30 UTC, providing a seven-day buffer beyond the scheduled date. Withdrawal announcements from either player would trigger the 50-50 tie resolution, as would any match cancellation. Current pricing leaves minimal margin for the Bartunkova upset scenario, suggesting either significant confidence in Eala's superiority or insufficient market participation to reflect genuine two-way risk.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi UK, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
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.
- 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 Birmingham: Alexandra Eala vs Nikola Bartunkova on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
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