Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative) 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 |
|---|---|
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda | 100% |
| Completed Match | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set 2 O/U 8.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Match O/U 21.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set 1 Winner | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Total Sets: O/U 2.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set 1 O/U 8.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set 2 O/U 9.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Match O/U 22.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set 1 O/U 9.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set 2 O/U 10.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Match O/U 23.5 | 100% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set 2 Winner | 0% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set 1 O/U 10.5 | 0% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set Handicap +/-1.5 | 0% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Set Handicap +/-1.5 | 0% |
| US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda Game Spread +/-4.5 | 0% |
Market context
Traders on decentralised prediction markets give 100% probability to us open, qualification wta: heather watson vs angela fita boluda. This market refers to the tennis match between Heather Watson and Angela Fita Boluda in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 11:00AM ET. This market will resolv…
Methodology
We read US Open, Qualification WTA: Heather Watson vs Angela Fita Boluda 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
- 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.
- 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.
- 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.
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