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 |
|---|---|
| Completed Match | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Total Sets: O/U 2.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Set 2 O/U 8.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Match O/U 21.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Set 1 O/U 8.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Set 1 Winner | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Set 2 O/U 9.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Match O/U 22.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Set 1 O/U 9.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Set 2 O/U 10.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Match O/U 23.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith Set 1 O/U 10.5 | 100% |
| Segovia: Paul Inchauspe vs Keegan Smith | 0% |
| Segovia: Paul Inchauspe vs Keegan Smith Set 2 Winner | 0% |
| Segovia: Paul Inchauspe vs Keegan Smith Set Handicap +/-1.5 | 0% |
| Segovia: Paul Inchauspe vs Keegan Smith Set Handicap +/-1.5 | 0% |
Market context
Paul Inchauspe and Keegan Smith are scheduled to play in Segovia, and the market will settle on the player who advances, or 50-50 if the match is not played or is left unresolved under the contract terms. With the crowd-implied probability at **0% YES**, the exchange is effectively pricing the named outcome as unreachable, which is usually more consistent with stale listing, market error, or a hard-to-observe event than with a genuine tennis edge. On Polymarket-style venues the quote is shown as an implied probability, whereas on Betfair or Smarkets traders usually read the same view through decimal odds and a back/lay spread, with fees and commission changing the effective price rather than the headline number.
For context, tennis markets often move most sharply when a match is close to start time and the draw, order of play, or player withdrawal is confirmed, because those are the moments when settlement risk shifts from live uncertainty to simple completion risk. A 0% reading is especially important to compare across platforms: on a regulated sportsbook or exchange with broader KYC reach, a small but real chance may still appear as a long decimal price, while on a prediction market the same state can be compressed to an apparent near-zero if liquidity is absent. That makes the operational details more important than the headline quote here: whether the match is still on, whether either player has withdrawn, and whether the Segovia schedule has been updated will matter more than any static pre-match number.
Methodology
We read Segovia: Paul Inchauspe vs Keegan Smith from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.
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
- Which platform has the deepest liquidity?
- Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
- 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.
- Are all these platforms regulated?
- No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
- 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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