Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
73% | 27% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
73% | 27% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 1 O/U 8.5 | 73% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Total Sets: O/U 3.5 | 66% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar | 65% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 2 Winner | 59% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Match O/U 36.5 | 57% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 3 Winner | 57% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 1 Winner | 56% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 1 O/U 9.5 | 53% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Match O/U 38.5 | 52% |
| Completed Match | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 2 O/U 8.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 2 O/U 9.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 4 Winner | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 2 O/U 10.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 3 O/U 8.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 3 O/U 9.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 3 O/U 10.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 4 O/U 8.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 4 O/U 9.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 4 O/U 10.5 | 50% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Game Spread +/-3.5 | 48% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set Handicap +/-1.5 | 47% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Match O/U 40.5 | 45% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Total Sets: O/U 4.5 | 31% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set 1 O/U 10.5 | 29% |
| US Open ATP: Alex Michelsen vs Daniel Merida Aguilar Set Handicap +/-2.5 | 23% |
Market context
Based on real-money crowd forecasting, us open atp: alex michelsen vs daniel merida aguilar stands at 73% likelihood according to current market consensus. This market refers to the tennis match between Alex Michelsen and Daniel Merida Aguilar in the US Open ATP, originally scheduled for September 4, 2026 at 11:00AM ET. This market w…
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 Best Prediction Markets, 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 Best Prediction Markets. 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.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade US Open ATP: Alex Michelsen vs Daniel Merida Aguilar on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
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