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% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Match O/U 21.5 | 100% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set 1 O/U 8.5 | 100% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set 2 O/U 8.5 | 100% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set Handicap +/-1.5 | 100% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Match O/U 22.5 | 100% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set 2 O/U 9.5 | 100% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set 1 O/U 9.5 | 100% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set 1 O/U 10.5 | 100% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina | 0% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Total Sets: O/U 2.5 | 0% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set 2 Winner | 0% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set 1 Winner | 0% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Match O/U 23.5 | 0% |
| Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina Set 2 O/U 10.5 | 0% |
Market context
Polina Kudermetova and Elina Svitolina are in a WTA match at the Mubadala Citi DC Open, and the market’s 0% YES price implies traders on one platform see the matchup as effectively unresolved rather than strongly one-sided. On the tennis data, that caution is understandable: the pair had no prior head-to-head before this event, while Svitolina entered with a far stronger recent record and ranking profile, including a top-10 singles ranking versus Kudermetova outside the top 100.[2][11]
Comparable cases suggest the market should be read through match completion risk as much as pure win probability. Svitolina’s recent results have been materially better — 39-14 over the last 52 weeks in one dataset, versus 15-27 for Kudermetova — and she also won their first recorded meeting at the 2025 Australian Open in straight sets.[2] On Polymarket-style interfaces, the price is shown as implied probability; on Betfair or Smarkets, the same view would usually be expressed as decimal odds, with the practical edge depending on commissions and fill quality rather than the headline number alone. KYC and access also differ: exchange-style books tend to be more restrictive by jurisdiction than a tokenised market view, which matters if the event is being traded across multiple venues.
The main catalysts are simple: confirmation that the round-two match is actually played, any rescheduling within the seven-day settlement window, and whether either player withdraws or retires before completion. Flashscore and other live listings showed the fixture as live around 31 July, which is the sort of signal traders watch for when a market starts near 0% but can still move to 50-50 if the match is not completed.[3][16] Because settlement depends on an advance, a cancellation, or a delayed/no-result outcome, line movement on this market will usually track official tournament updates more than pre-match form once play is in doubt.
Methodology
We read Mubadala Citi DC Open: Polina Kudermetova vs Elina Svitolina 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
- What does Polymarket cost vs Kalshi?
- Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
- 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.
- 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.
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