Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva | 100% |
| Completed Match | 100% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set 2 Winner | 100% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Total Sets: O/U 2.5 | 100% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set 2 O/U 8.5 | 100% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Match O/U 21.5 | 100% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Match O/U 22.5 | 100% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set 1 O/U 8.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set 1 Winner | 0% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set Handicap +/-1.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set 1 O/U 9.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set 2 O/U 9.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set 1 O/U 10.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Set 2 O/U 10.5 | 0% |
| Wimbledon WTA: Elise Mertens vs Maria Timofeeva Match O/U 23.5 | 0% |
Market context
Elise Mertens faces qualifier Maria Timofeeva in the Wimbledon WTA Round of 64 on 2 July 2026, with the match scheduled to begin at 13:00 Moscow time. The crowd-implied probability of 100% YES for Mertens advancing reflects her established dominance on grass, where she holds 45 career wins, compared to Timofeeva’s first appearance at the tournament as a qualifier from the second round [9]. Historical precedents in WTA tennis show that seeded players with significant grass experience overwhelmingly defeat qualifiers in early rounds, particularly when the qualifier has competed in fewer matches during the current campaign; Mertens has played one match while Timofeeva has competed in four, yet the seeding gap remains decisive [6].
Traders should monitor the official ball-play signal, as the market resolves to a fair price if the match does not start due to injury, walkover, or forfeiture [3]. Key catalysts include any pre-match withdrawal announcements from the WTA official schedule and real-time updates on player fitness, which can be tracked via ESPN’s live tennis coverage or Sofascore’s head-to-head data [5][7]. While the crypto macro environment—specifically BTC/ETH funding rates and USDC settlement flows—may influence on-chain liquidity for this prediction contract, the primary driver remains the tennis-specific dependency: whether Mertens successfully completes the match without interruption. Any delay beyond seven days without a winner determined triggers a 50-50 resolution, making timing a critical variable for settlement [3].
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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