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 |
|---|---|
| Istanbul 2: Aliona Falei vs Yue Yuan | 100% |
| Completed Match | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Total Sets: O/U 2.5 | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set 2 Winner | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set 1 O/U 8.5 | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Match O/U 21.5 | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set 1 O/U 9.5 | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Match O/U 22.5 | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set 1 O/U 10.5 | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Match O/U 23.5 | 100% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set 1 Winner | 0% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set 2 O/U 8.5 | 0% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set Handicap +/-1.5 | 0% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set 2 O/U 9.5 | 0% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set Handicap +/-1.5 | 0% |
| Istanbul 2: Aliona Falei vs Yue Yuan Set 2 O/U 10.5 | 0% |
Market context
The underlying event is the Istanbul 2 tennis match between Aliona Falei and Yue Yuan, scheduled for 6:00 AM ET on 14 July 2026, where the market resolves to the player who advances. With a crowd-implied probability of 100% YES, the market currently treats Falei’s advancement as a certainty, a stance that mirrors historical patterns in prediction markets where early liquidity concentrates heavily on the perceived favourite before match-day volatility emerges. Comparable cases in tennis prediction markets show that such extreme probabilities often persist only if no injury news or schedule changes disrupt the fixture, as seen in prior WTA events where retirements shifted odds from 95% to 50-50 within hours.
Traders should monitor the official WTA schedule for any delay announcements beyond the seven-day settlement window and watch for real-time injury reports from the tournament venue, as these are the primary catalysts that could invalidate the 100% pricing. Recent coverage of the Istanbul 2 tournament highlights that weather disruptions and player fitness remain the most common reasons for match cancellations in this circuit, according to a report from the WTA’s official news portal. On-chain mechanics tie into this via USDC settlement, where whale flows into BTC or ETH could indirectly impact liquidity depth if macro volatility spikes, though the contract’s resolution remains strictly tied to the match outcome rather than crypto price movements.
Methodology
This page reads Istanbul 2: Aliona Falei vs Yue Yuan 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 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.
- 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.
- 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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