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 |
|---|---|
| Kingston: Kenta Miyoshi vs Roger Pascual Ferra | 100% |
| Completed Match | 100% |
Market context
The Kingston qualifying tournament in Jamaica will host a first-round match between Japanese player Kenta Miyoshi and Spanish competitor Roger Pascual Ferra on 17 August 2026. The market currently reflects near-certain confidence in Miyoshi's advancement, though the settlement window extends to 24 August to account for potential scheduling delays.
Miyoshi, ranked outside the top 200 on the ATP circuit, has competed primarily on Challenger and ITF circuits where consistency varies considerably. Pascual Ferra, similarly positioned in the lower rankings, brings comparable experience at qualifying level. Historical precedent from Kingston qualifying rounds shows that seeding and recent form typically determine outcomes, though upsets occur in roughly 15–20 per cent of matches at this tier. The 100 per cent implied probability suggests traders are either pricing in Miyoshi as the tournament's higher seed or responding to recent performance data favouring his advancement.
Traders should monitor official tournament draws and seeding announcements from the ATP, typically released 48 hours before qualifying begins. Weather disruptions in Jamaica during August present a material risk for schedule delays; the seven-day buffer in the resolution criteria provides some protection against minor postponements. Any withdrawal or injury announcement from either player would trigger immediate repricing. Recent ITF and Challenger results for both competitors, available through ATP databases, remain the primary catalyst for probability shifts before the scheduled start date.
Methodology
This page tracks Kingston: Kenta Miyoshi vs Roger Pascual Ferra 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
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
UK Frequently Asked Questions
- 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.
- Can prediction markets influence election outcomes?
- Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
- 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.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
- 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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