Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Sport Prediction Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Sport Prediction → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Sport Prediction → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Sport Prediction → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Sport Prediction → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Sport Prediction → |
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 Sport Prediction.
Active sub-markets
| Figueira Da Foz: Jeline Vandromme vs Ayla Aksu Total Sets: O/U 2.5 | 100% Over 2.5 | 0% Under 2.5 |
| Figueira Da Foz: Jeline Vandromme vs Ayla Aksu Set 2 O/U 9.5 | 0% Over | 100% Under |
| Figueira Da Foz: Jeline Vandromme vs Ayla Aksu Set 2 O/U 10.5 | 0% Over | 100% Under |
| Figueira Da Foz: Jeline Vandromme vs Ayla Aksu Set 1 O/U 8.5 | 100% Over | 0% Under |
| Figueira Da Foz: Jeline Vandromme vs Ayla Aksu Set 1 O/U 10.5 | 100% Over | 0% Under |
| Figueira Da Foz: Jeline Vandromme vs Ayla Aksu Set 1 Winner | 0% Vandromme | 100% Aksu |
Market context
Jeline Vandromme’s quarter-final against Ayla Aksu at the Figueira da Foz WTA 125 event is the live real-world reference for this market, and the listed price already implies the match is expected to be completed in Vandromme’s favour. Current tournament listings show the pair scheduled for 19 June on hard courts, with Vandromme’s WTA ranking shown at 171 on Flashscore.[2][5] Head-to-head context is thin: TennisStats says the two players have equal wins in their careers, which points to limited historical separation rather than a strong established edge.[1]
For traders, the main read-through is that a 100% YES line is most vulnerable to operational rather than form-driven risks: late withdrawal, walkover, postponement, or a match that starts but is not finished could still change settlement under the market rules. Live schedule pages indicate the match was set for early afternoon UTC on 19 June, so any change in order of play, court availability, or withdrawal from either side would be the key catalyst to watch.[1][7] Recent match-detail pages also show both players active in the draw earlier in the week, but the fragmentary recent results do not establish a clear form gap, which makes availability and completion more important than historical record in framing the current price.[3][5]
Methodology
We track Figueira Da Foz: Jeline Vandromme 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
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 does it cost to trade on Sport Prediction?
- Zero. Sport Prediction 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, Sport Prediction 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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