Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Sport Prediction Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Sport Prediction → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Sport Prediction → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Sport Prediction → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Sport Prediction → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Sport Prediction → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Sport Prediction.
Active sub-markets
| HSBC Championships: Jenson Brooksby vs Martin Damm Total Sets: O/U 2.5 | 100% Over 2.5 | 0% Under 2.5 |
| Completed Match | 100% YES | 0% NO |
| HSBC Championships: Jenson Brooksby vs Martin Damm Set 1 Winner | 100% Brooksby | 0% Damm |
| HSBC Championships: Jenson Brooksby vs Martin Damm Set 2 Winner | 0% Brooksby | 100% Damm |
| HSBC Championships: Jenson Brooksby vs Martin Damm Set 2 O/U 9.5 | 0% Over | 100% Under |
| HSBC Championships: Jenson Brooksby vs Martin Damm Set 1 O/U 9.5 | 100% Over | 0% Under |
Market context
Jenson Brooksby faces Martin Damm in a first-round encounter at the HSBC Championships scheduled for 16 June 2026. The American, ranked in the mid-60s on the ATP tour, has shown inconsistent form throughout 2026, with a mixed record on hard courts where the championship is staged. Damm, a Czech player competing at a lower ranking, has limited recent tournament activity and represents a significant underdog in conventional matchup analysis.
The 100% crowd probability reflects either incomplete market information or a technical anomaly, given that both players remain active on the professional circuit with no public withdrawal announcements as of late May 2026. Historical precedent suggests that matches between players of disparate ranking and recent form typically settle toward the higher-ranked competitor, though upsets occur in approximately 15–20% of such encounters depending on surface and preparation time. The scheduling places the match at an unusual 4:00 AM ET start, which may affect player readiness and crowd engagement but does not typically alter match outcomes.
Traders should monitor official HSBC Championships draw confirmations and any injury bulletins released by either player's camp through early June. Weather delays at the venue could trigger the seven-day extension clause, whilst withdrawal by either competitor would force a 50-50 resolution. Recent ATP communications regarding the 2026 hard-court season should clarify Brooksby's current fitness status, as recurring injury concerns have marked his campaign.
Methodology
We track HSBC Championships: Jenson Brooksby vs Martin Damm on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Is this market available outside the US?
- Sport Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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