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 |
|---|---|
| Winnipeg: Charles Broom vs Zhizhen Zhang | 100% |
| Completed Match | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Total Sets: O/U 2.5 | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set 2 O/U 8.5 | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set 2 Winner | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Match O/U 21.5 | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set 2 O/U 9.5 | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Match O/U 22.5 | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set 2 O/U 10.5 | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Match O/U 23.5 | 100% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set Handicap +/-1.5 | 0% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set 1 Winner | 0% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set 1 O/U 8.5 | 0% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set Handicap +/-1.5 | 0% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set 1 O/U 9.5 | 0% |
| Winnipeg: Charles Broom vs Zhizhen Zhang Set 1 O/U 10.5 | 0% |
Market context
Charles Broom is scheduled to play Zhizhen Zhang in Winnipeg, and the market settles on who actually advances from that match. The crowd is pricing **100% YES**, which usually means the contract is being treated as a near-certain live event rather than a close sporting call; on a USDC-settled prediction venue, that kind of pricing often reflects schedule confirmation more than any view on the tennis itself.
For context, early or fully one-sided probabilities in tennis event markets often come from the fixture appearing in live score and draw feeds before any outcome is known, rather than from a strong read on player strength. Here, the only confirmed public evidence in the results is that Flashscore has the fixture listed as live on 22 July 2026, which supports the view that the match is/was on the official running order rather than cancelled outright[1]. In practice, the key question for settlement is whether the match is completed, or whether it is abandoned or delayed beyond the market’s seven-day window, because those are the cases that can override the straightforward winner outcome.
Traders should watch the tournament schedule, any official delay notices, and whether either player is withdrawn or retires before completion. In on-chain terms, the main risk is not the market’s direction but the settlement path: if the contract resolves to a 50-50 fallback, USDC payout logic depends on the event definition rather than the scoreline alone. Wider crypto conditions can matter at the margin for liquidity and hedging appetite, but unless BTC or ETH volatility is feeding into broader risk sentiment, the decisive inputs remain match status, advance/retirement rules, and whether the fixture stays inside the settlement window.
Sources: 1
Methodology
This page reads Winnipeg: Charles Broom vs Zhizhen Zhang 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 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.
- 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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