Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Kalshi UK Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Kalshi UK → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Kalshi UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Kalshi UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Kalshi UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Kalshi UK → |
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 Kalshi UK.
Active sub-markets
Market context
Lorenzo Giustino and Marko Topo are scheduled to meet in the opening rounds of the Heilbronn tournament on 1 June 2026. The market currently prices Giustino's advancement at 100% on Polymarket's USDC/Polygon infrastructure, reflecting conditional token mechanics where YES holders receive full payout only if Giustino progresses past Topo. This extreme pricing suggests either overwhelming confidence in Giustino's superiority or minimal liquidity depth in the order book, a common pattern for lower-tier ATP Challenger matches where retail interest remains sparse until closer to event dates.
Giustino, an Italian journeyman ranked outside the top 200, has competed primarily on the Challenger circuit with modest success rates against similarly ranked opponents. Topo, a Croatian player with comparable tour credentials, presents no obvious ranking advantage that would justify absolute certainty. Historical Challenger-level matchups between players of equivalent standing typically resolve with 55–65% probability for the higher-ranked player; the 100% reading here deviates sharply from comparable pairings and suggests the market may be illiquid rather than informationally confident.
Traders should monitor entry lists and ranking updates through the ATP's official schedule, typically finalised two weeks before the tournament. Injury announcements or late withdrawals could trigger resolution under the 50–50 tie clause if either player fails to compete. The settlement window extends to 8 June, allowing seven days for match completion; any delay beyond that threshold without a decided outcome would also resolve to even odds, creating tail-risk exposure for YES holders in the event of weather disruptions or administrative postponement.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Is this market available outside the US?
- Kalshi UK 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.
- 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.
- What does it cost to trade on Kalshi UK?
- Zero. Kalshi UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi UK triggers a quick verification flow that finishes in 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.
Trade Heilbronn: Lorenzo Giustino vs Marko Topo on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
Trade on Kalshi UK →