Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets → |
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 Best Prediction Markets.
Active sub-markets
| Mallorca Championships: Damir Dzumhur vs Vit Kopriva | 0% Damir Dzumhur | 100% Vit Kopriva |
| Completed Match | 100% YES | 0% NO |
| Mallorca Championships: Damir Dzumhur vs Vit Kopriva Set 1 O/U 8.5 | 100% Over | 0% Under |
| Mallorca Championships: Damir Dzumhur vs Vit Kopriva Set 1 O/U 9.5 | 0% Over | 100% Under |
| Mallorca Championships: Damir Dzumhur vs Vit Kopriva Set 1 O/U 10.5 | 0% Over | 100% Under |
| Mallorca Championships: Damir Dzumhur vs Vit Kopriva Set 2 Winner | 0% Dzumhur | 100% Kopriva |
Market context
The upcoming first-round ATP Mallorca Championships match pits Damir Dzumhur against Vit Kopriva at Santa Ponsa Tennis Club, scheduled to begin at 01:00 UTC on 23 June 2026. This contest marks the second career encounter between the two players, with current sportsbook odds favouring Kopriva at 1.64 against Dzumhur’s 2.25, while the prediction market for Dzumhur advancing shows a starkly divergent 0% implied probability.
Historical precedents in tennis prediction markets reveal that such extreme divergence often signals either a severe information lag or a specific, unpublicised dependency, such as a player’s withdrawal or injury status not yet reflected in live odds. Comparable cases from recent ATP tournaments show that when a prediction market settles at 0% while sportsbooks remain open, the resolution frequently hinges on a delayed administrative announcement rather than pure on-court performance, framing the current probability as a binary event dependent on external validation rather than match dynamics.
Traders must monitor official ATP Tour communications and Mallorca Championship head-to-head updates for any sudden changes regarding player availability or match status, as these are the primary catalysts for market resolution. A recent Tennis Tonic analysis explicitly picks Kopriva to win in three sets, reinforcing the sportsbook consensus and highlighting the anomaly in the prediction market’s zero probability [1]. The settlement window closing on 30 June 2026 means any delay beyond seven days or a cancellation without a winner will trigger a 50-50 resolution, making the timing of official confirmations critical for accurate positioning.
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?
- Best Prediction Markets 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 Best Prediction Markets?
- Zero. Best Prediction Markets 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, Best Prediction Markets 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.
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