Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley | 100% |
| Completed Match | 100% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Total Sets: O/U 2.5 | 100% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set 1 O/U 8.5 | 100% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set 1 Winner | 100% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set 2 O/U 8.5 | 100% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Match O/U 21.5 | 100% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Match O/U 22.5 | 100% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Match O/U 23.5 | 100% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set 2 Winner | 0% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set Handicap +/-1.5 | 0% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set 1 O/U 9.5 | 0% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set 2 O/U 9.5 | 0% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set 1 O/U 10.5 | 0% |
| Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley Set 2 O/U 10.5 | 0% |
Market context
Nicolas Mejia and Jacob Fearnley are scheduled to meet in the opening round of Cincinnati Open qualifying on 11 August 2026. The 75% implied probability favouring Mejia reflects his ranking advantage and recent form relative to Fearnley, though qualifying draws often feature tightly matched competitors where seeding carries less predictive weight than main-draw tennis. The settlement window extends to 18 August, allowing seven days for the match to conclude; any cancellation, tie, or unfinished result beyond that threshold triggers a 50-50 resolution.
Historical qualifying matchups at Masters 1000 events show that unseeded players frequently upset higher-ranked opponents in single-elimination formats, particularly when both competitors sit outside the ATP top 100. Fearnley's recent trajectory on the Challenger circuit and ITF level will determine whether the current odds adequately price his chances. Comparable markets on Polymarket and Kalshi for ATP qualifying rounds typically settle around 65–70% for the higher-ranked player, suggesting this market's 75% may overweight Mejia's credentials slightly.
Traders should monitor Cincinnati's official draw release and any late withdrawals or injury announcements in the week preceding the match. Weather delays at the Western & Southern Open occasionally compress qualifying schedules, potentially affecting player fatigue or preparation time. Kalshi's higher KYC requirements and Betfair's decimal-odds display (around 1.33 for this probability) offer different friction profiles compared to Polymarket's percentage format, affecting how quickly positions shift if new information emerges about either player's fitness or draw positioning.
Methodology
This page compares Cincinnati Open, Qualification: Nicolas Mejia vs Jacob Fearnley specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.
FAQ
- Polymarket vs Kalshi — which is better?
- Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
- Is Betfair a Polymarket alternative?
- Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
- What about Smarkets as an alternative?
- Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
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