Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Qué Es) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Wimbledon WTA: Elise Mertens vs Elena Rybakina | 100% |
| Completed Match | 100% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set 1 O/U 8.5 | 100% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set 2 Winner | 100% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set 1 Winner | 100% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set 1 O/U 9.5 | 100% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set 1 O/U 10.5 | 100% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set 2 O/U 8.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Total Sets: O/U 2.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Match O/U 21.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set Handicap +/-1.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Match O/U 22.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set 2 O/U 9.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Set 2 O/U 10.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Elena Rybakina Match O/U 23.5 | 0% |
Market context
The upcoming Wimbledon WTA match between Elise Mertens and Elena Rybakina, originally set for 6:00 AM ET on 4 July 2026, is the real-world event driving this prediction contract. On Polymarket today, the contract is priced at 100% YES for Mertens advancing, reflecting a crowd-implied certainty that she will win this Round of 32 clash. This pricing sits on the Polygon network, settled in USDC, where conditional tokens lock the outcome based on the official match result.
Historically, similar 100% pricing in tennis markets has rarely held when top-tier players like Rybakina face off, as her career win rate of 76% in 2026 and 57% head-to-head record against Mertens suggest a competitive contest[2]. Comparable cases from past Wimbledon rounds show that even heavily favoured players often face unexpected upsets when grass-court specialists meet, making the current certainty an outlier rather than a standard reflection of on-court dynamics.
Traders should monitor the official WTA schedule for any delays or cancellations, as the market resolves to 50-50 if the match is not completed within seven days[4]. Recent updates from Sofascore confirm the match is live at 10:00 UTC, but any announcement regarding player fitness or weather disruptions could shift the probability significantly[4]. The key dependency is the match completion; without a winner determined, the conditional tokens will trigger the 50-50 resolution, altering the on-chain payout structure.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Qué Es, 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
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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 Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- 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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