Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) 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 |
|---|---|
| Completed Match | 100% |
| National Bank Open: Carol Zhao vs Magda Linette Set 1 Winner | 100% |
| National Bank Open: Carol Zhao vs Magda Linette Total Sets: O/U 2.5 | 100% |
| National Bank Open: Carol Zhao vs Magda Linette Set 1 O/U 8.5 | 100% |
| National Bank Open: Carol Zhao vs Magda Linette Match O/U 21.5 | 100% |
| National Bank Open: Carol Zhao vs Magda Linette Set 1 O/U 9.5 | 100% |
| National Bank Open: Carol Zhao vs Magda Linette Match O/U 22.5 | 100% |
| National Bank Open: Carol Zhao vs Magda Linette Match O/U 23.5 | 100% |
| National Bank Open: Carol Zhao vs Magda Linette | 0% |
| National Bank Open: Carol Zhao vs Magda Linette Set 2 Winner | 0% |
| National Bank Open: Carol Zhao vs Magda Linette Set 2 O/U 8.5 | 0% |
| National Bank Open: Carol Zhao vs Magda Linette Set Handicap +/-1.5 | 0% |
| National Bank Open: Carol Zhao vs Magda Linette Set 2 O/U 9.5 | 0% |
| National Bank Open: Carol Zhao vs Magda Linette Set Handicap +/-1.5 | 0% |
| National Bank Open: Carol Zhao vs Magda Linette Set 1 O/U 10.5 | 0% |
| National Bank Open: Carol Zhao vs Magda Linette Set 2 O/U 10.5 | 0% |
Market context
Traders on decentralised prediction markets give 100% probability to national bank open: carol zhao vs magda linette. This market refers to the tennis match between Carol Zhao and Magda Linette in the National Bank Open, originally scheduled for August 3, 2026 at 10:00AM ET. This market will resolve to 'Carol Zhao' …
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade National Bank Open: Carol Zhao vs Magda Linette on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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