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
| Roland Garros WTA: Emma Navarro vs Janice Tjen | 100% YES | 0% NO |
| Completed Match | 100% YES | 0% NO |
| Roland Garros WTA: Emma Navarro vs Janice Tjen Set 1 O/U 8.5 | 100% YES | 0% NO |
| Roland Garros WTA: Emma Navarro vs Janice Tjen Set 1 O/U 9.5 | 100% YES | 0% NO |
| Roland Garros WTA: Emma Navarro vs Janice Tjen Set 1 O/U 10.5 | 0% YES | 100% NO |
| Roland Garros WTA: Emma Navarro vs Janice Tjen Total Sets: O/U 2.5 | 0% YES | 100% NO |
Market context
Emma Navarro, the American 23-year-old ranked in the top 30, faces Janice Tjen in an early-round Roland Garros WTA encounter scheduled for 24 May 2026. The 99% implied probability on Polymarket reflects Navarro's substantial ranking advantage and recent form trajectory. On-chain USDC liquidity pricing this conditional token suggests the market has largely settled on Navarro's progression, with minimal uncertainty baked into the spread.
Navarro's ascent through the rankings over 2024–2025 provides the foundation for this pricing. She reached her career-high ranking through consistent performances at mid-tier tournaments and has shown particular aptitude on clay courts, where Roland Garros is contested. Tjen, a qualifier or lower-ranked player, enters with limited recent Grand Slam exposure. Historical precedent shows that when ranking gaps exceed 15–20 positions at this stage of a major, the higher-ranked player advances roughly 92–95% of the time, though upsets do materialise when fatigue, injury, or tactical mismatches emerge.
Traders monitoring this contract should track official Roland Garros draw confirmations and any late injury reports in the week preceding 24 May. Court assignments and weather conditions—particularly rain delays that could extend beyond the seven-day resolution window—present secondary settlement risks. Navarro's performance in warm-up tournaments immediately before Roland Garros will signal whether the 99% pricing adequately reflects her form, though the probability leaves minimal margin for meaningful position-taking on Tjen.
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
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- Where can I trade this market with the lowest fees?
- On Kalshi UK, 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?
- 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.
- 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.
- 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.
Trade Roland Garros WTA: Emma Navarro vs Janice Tjen on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
Trade on Kalshi UK →