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% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set 1 O/U 8.5 | 100% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set 2 O/U 8.5 | 100% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set 2 O/U 9.5 | 100% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set Handicap +/-1.5 | 100% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set 1 Winner | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set 2 Winner | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Total Sets: O/U 2.5 | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Match O/U 21.5 | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set Handicap +/-1.5 | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set 1 O/U 9.5 | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Match O/U 22.5 | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set 1 O/U 10.5 | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Set 2 O/U 10.5 | 0% |
| Iasi Open, Qualification: Varvara Lepchenko vs Alevtina Ibragimova Match O/U 23.5 | 0% |
Market context
The Iasi Open qualification match between Varvara Lepchenko and Alevtina Ibragimova is currently underway or has just concluded, with live scores indicating the contest has finished. Data from ESPN confirms Alevtina Ibragimova defeated Lepchenko in the qualifying first round with a scoreline of 6–3, 6–4, meaning Lepchenko did not advance [1]. This real-world outcome directly contradicts the market’s current 0% implied probability for Lepchenko winning, suggesting the contract has likely already settled or is mispriced relative to the completed result.
Historically, prediction markets on tennis qualifiers with 0% probability for one side often reflect either a completed match where that player lost or a severe liquidity gap before results are on-chain. In comparable WTA 125 qualification markets, contracts resolving to the loser at 0% typically settle within hours of match completion once score feeds update oracle systems. The 50-50 tie clause for cancellations is irrelevant here given the match finished decisively, and USDC settlement will reflect the on-chain resolution of Ibragimova as the advancing player.
Traders should monitor the Polymarket oracle feed and live score aggregators like Sofascore to confirm the official resolution timestamp, as delays between match end and oracle update can create temporary arbitrage opportunities [3]. No further announcements are needed—the catalyst is the confirmed result already visible on ESPN and Flashscore, which shows Ibragimova as the winner [1][4]. With BTC and ETH macro conditions stable today, on-chain settlement should proceed without gas congestion, ensuring USDC payouts reflect the factual outcome swiftly.
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
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- 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.
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