Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Match O/U 21.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set 2 O/U 8.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set 1 O/U 8.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set 2 O/U 9.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Match O/U 22.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set 1 O/U 9.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set 2 O/U 10.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Match O/U 23.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set 1 O/U 10.5 | 100% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci | 0% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set 2 Winner | 0% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Total Sets: O/U 2.5 | 0% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set 1 Winner | 0% |
| Cincinnati Open: Zachary Svajda vs Mattia Bellucci Set Handicap +/-1.5 | 0% |
Market context
Zachary Svajda and Mattia Bellucci are scheduled to meet in the Cincinnati Open (ATP Masters 1000) on 13 August 2026. The market currently prices Svajda's advancement at 14%, implying strong favouritism toward Bellucci. Both players compete on the professional tennis circuit, though their rankings and recent form will substantially influence match outcome. The settlement window closes on 20 August, allowing a seven-day buffer for scheduling delays or postponements before resolution defaults to 50-50.
Historical matchup data and career trajectories provide the primary frame for evaluating this probability. Bellucci has established himself as a consistent performer on the ATP tour with a higher career ranking than Svajda, whose trajectory has been more volatile. Head-to-head records between players of differing ranking tiers at Masters events typically favour the higher-ranked competitor by margins consistent with the current 86-14 split. Svajda's recent tournament results and seeding status at Cincinnati will determine whether the market's confidence in Bellucci reflects genuine form disparity or standard ranking-based pricing.
Traders should monitor official ATP draw announcements and seeding confirmations as the tournament approaches, which typically occur in early August. Injury reports or withdrawal announcements from either player would trigger immediate repricing. Court surface conditions at Cincinnati (hard court) and recent hard-court performance records for both players merit tracking through ATP official channels and tournament-specific previews. Weather delays or scheduling changes in the week preceding 13 August could affect match timing and player preparation, though the seven-day resolution window provides substantial protection against cancellation scenarios.
Methodology
This page tracks Cincinnati Open: Zachary Svajda vs Mattia Bellucci across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.
Resolution & payout
Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.
Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.
UK Frequently Asked Questions
- How accurate are political prediction markets?
- Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
- What resolution source is used for elections?
- Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
- Which platform has the deepest political liquidity?
- Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.
- Are political prediction markets legal in my country?
- It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.
- Are UK election prediction markets available from the UK?
- Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.
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