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 |
|---|---|
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha | 100% |
| Completed Match | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Match O/U 21.5 | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set 2 Winner | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set 2 O/U 8.5 | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set 1 O/U 8.5 | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set 1 Winner | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set Handicap +/-1.5 | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set 2 O/U 9.5 | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set 2 O/U 10.5 | 100% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Total Sets: O/U 2.5 | 0% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Match O/U 22.5 | 0% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set 1 O/U 9.5 | 0% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set Handicap +/-1.5 | 0% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Match O/U 23.5 | 0% |
| Canadian Open, Qualification: Martin Damm vs Henrique Rocha Set 1 O/U 10.5 | 0% |
Market context
Martin Damm and Henrique Rocha are due to meet in Canadian Open qualifying on hard court, with the market currently pricing a strong chance that Damm advances. The main read-through is that Damm has the cleaner hard-court profile in the available recent data: his 2026 results are listed at 27-20 overall, while Rocha is 25-18, and Damm also holds the higher ATP ranking in the live match listings, 104 to Rocha’s 123.[1][9]
The historical frame is straightforward but not dominant. The pair have already played a completed match in 2025, which Rocha won 2-1 in Sumter, but earlier head-to-head data also shows Damm winning a three-set meeting in 2023, so the matchup has been split across different surfaces and conditions.[3][13][15] That kind of mixed record usually supports a market near the high end for the player with the stronger current hard-court numbers, rather than a near-certainty.
For traders, the key catalyst is whether the qualifying draw holds and the match is actually staged inside the settlement window, because a no-show, cancellation, or delay beyond seven days would push the contract to 50-50 under the market rules. The live listings from score providers show the fixture attached to Montreal/Canadian Open qualifying, but that kind of scheduling can still move if court order, weather, or late withdrawals intervene.[2][6][9] On the crypto side, this is a pure USDC-settled event, so the main market spillover is indirect: broader BTC and ETH volatility can affect risk appetite and liquidity, but the contract itself resolves only on the tennis result and fallback timing rules.
Methodology
This page reads Canadian Open, Qualification: Martin Damm vs Henrique Rocha 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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