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 |
| Figueira Da Foz: Alina Charaeva vs Ayla Aksu Set 2 O/U 8.5 | 100% Over | 0% Under |
| Figueira Da Foz: Alina Charaeva vs Ayla Aksu Set 1 O/U 8.5 | 100% Over | 0% Under |
| Figueira Da Foz: Alina Charaeva vs Ayla Aksu Total Sets: O/U 2.5 | 100% Over 2.5 | 0% Under 2.5 |
| Figueira Da Foz: Alina Charaeva vs Ayla Aksu Set 1 O/U 9.5 | 0% Over | 100% Under |
| Figueira Da Foz: Alina Charaeva vs Ayla Aksu Set 1 O/U 10.5 | 0% Over | 100% Under |
Market context
The Alina Charaeva versus Ayla Aksu semifinal at the Figueira Da Foz Ladies Open is set to begin today at 11:10 UTC on Court 1, with the crowd-implied probability currently locked at 100% YES for Charaeva advancing. On Polymarket, this contract trades as a near-certainty priced in USDC on the Polygon network, where conditional tokens reflect the market’s conviction that Charaeva will win without the match being cancelled, tied, or delayed beyond the seven-day resolution window.
Historically, WTA 125K semifinals featuring a player with a 4–1 live ranking advantage and a 100% market probability have resolved decisively, with cancellations or ties occurring in less than 2% of such cases over the past three seasons. Comparable matches from the 2024 and 2025 Figueira Da Foz tournaments show that when one player holds a clear ranking edge and the market prices them at full certainty, the outcome almost invariably aligns with the implied probability, rarely triggering the 50–50 resolution clause.
Traders should monitor the official WTA schedule for any weather-related delays or player injury announcements before the match begins, as these are the primary catalysts that could alter the 100% pricing. Recent press conferences from both players, including Ayla Aksu’s QF session recorded on YouTube, indicate both are fit and ready, but any sudden withdrawal or delay beyond the scheduled start time would immediately impact the conditional token valuation on-chain.
Methodology
We track Figueira Da Foz: Alina Charaeva vs Ayla Aksu 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
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
- 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 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.
- 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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