Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald | 100% |
| Completed Match | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set 2 Winner | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Total Sets: O/U 2.5 | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Match O/U 21.5 | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set 1 O/U 8.5 | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Game Spread +/-1.5 | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Match O/U 22.5 | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set 1 O/U 9.5 | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Match O/U 23.5 | 100% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set 1 Winner | 0% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set 2 O/U 8.5 | 0% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set Handicap +/-1.5 | 0% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set 2 O/U 9.5 | 0% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set 1 O/U 10.5 | 0% |
| US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald Set 2 O/U 10.5 | 0% |
Market context
Traders on decentralised prediction markets give 100% probability to us open, qualification atp: dalibor svrcina vs mackenzie mcdonald. This market refers to the tennis match between Dalibor Svrcina and Mackenzie McDonald in the US Open, Qualification ATP, originally scheduled for August 27, 2026 at 11:00AM ET. This market will resol…
Methodology
We read US Open, Qualification ATP: Dalibor Svrcina vs Mackenzie McDonald 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
Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.
Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.
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.
- 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.
- 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. Polymarket Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.
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