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 |
|---|---|
| Completed Match | 100% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set 2 O/U 8.5 | 100% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set 2 O/U 9.5 | 100% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set Handicap +/-1.5 | 100% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Total Sets: O/U 2.5 | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Match O/U 21.5 | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set 2 Winner | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set Handicap +/-1.5 | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set 1 O/U 8.5 | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set 1 Winner | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Match O/U 22.5 | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set 1 O/U 9.5 | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set 2 O/U 10.5 | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Match O/U 23.5 | 0% |
| ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen Set 1 O/U 10.5 | 0% |
Market context
Dabin Kim, a South Korean ITF circuit player, faces Meng Yi Chen of China in a W15 tournament match scheduled for 20 August 2026 in Tianjin. The winner advances through the draw; the loser is eliminated. Settlement occurs on 27 August, allowing a seven-day window for completion or rescheduling before the market resolves to 50-50 if unplayed.
The 0% probability reflects either missing historical data on both players' head-to-head record or an absence of comparable ITF W15 matchups in the prediction market's catalogue. ITF W15 tournaments sit at the lower tier of professional women's tennis, where player rankings fluctuate rapidly and injury withdrawals occur frequently. Without established win rates or recent form metrics for either competitor, the market shows no confidence in either outcome—a common pattern when both participants lack sufficient on-chain trading history or external odds reference points.
Traders should monitor ITF tournament draws and player withdrawal announcements through the WTA Insider or ITF official channels in the week preceding 20 August. Weather disruptions in Tianjin during late summer can delay matches; any postponement beyond 27 August triggers the 50-50 resolution. USDC settlement will depend on verified match results from official ITF records. Early movement in this market may correlate with larger tennis betting flows on major exchanges, though W15 events typically generate minimal whale activity compared to Grand Slam fixtures.
Methodology
This page reads ITF W15 Tianjin 3 Women: Dabin Kim vs Meng Yi Chen 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.
UK Frequently Asked Questions
- 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.
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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