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: Ajla Tomljanovic vs Mariam Bolkvadze Set 2 Winner | 100% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Match O/U 21.5 | 100% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Match O/U 22.5 | 100% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Match O/U 23.5 | 100% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Total Sets: O/U 2.5 | 100% |
| Completed Match | 100% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Set 2 O/U 9.5 | 0% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Set 1 Winner | 0% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Set 1 O/U 8.5 | 0% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Set Handicap +/-1.5 | 0% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Set 1 O/U 9.5 | 0% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Set 1 O/U 10.5 | 0% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Set 2 O/U 8.5 | 0% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze | 0% |
| Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze Set 2 O/U 10.5 | 0% |
Market context
The upcoming Wimbledon WTA match between Ajla Tomljanovic and Mariam Bolkvadze, originally set for 29 June 2026, is now the focal point of a prediction market with a 100% implied probability favouring Tomljanovic. Tomljanovic enters as the clear favourite, with betting odds suggesting an 88.3% chance of victory, while Bolkvadze holds a mere 17.4% implied probability according to moneyline analysis[2].
Historically, such extreme crowd-implied probabilities in tennis markets often signal walkovers or retirements before play begins, rather than competitive matches ending in a decisive win. In comparable WTA Round 128 scenarios, markets resolving to 100% on one player frequently precede an opponent’s withdrawal due to injury, a pattern that has occurred in past Wimbledon tournaments where top-ranked players faced unranked challengers[3].
Traders should monitor official WTA announcements for any withdrawal notices or medical updates regarding Bolkvadze, as these are the primary catalysts that could alter the settlement outcome. The match is scheduled for Court 11 in London, and any delay beyond seven days without a winner would trigger a 50-50 resolution, making real-time tournament bulletins from the WTA website critical for on-chain USDC settlement accuracy[6]. Recent tennis coverage confirms Tomljanovic’s dominance in pre-match simulations, projecting an 83% win probability, reinforcing the market’s current stance[5].
Methodology
This page reads Wimbledon WTA: Ajla Tomljanovic vs Mariam Bolkvadze on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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 does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- 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.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
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