Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
51% | 49% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
51% | 49% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo | 51% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set 1 Winner | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set 2 Winner | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Total Sets: O/U 2.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set 2 O/U 8.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set 1 O/U 8.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set Handicap +/-1.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Match O/U 21.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set 2 O/U 9.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Match O/U 22.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set 1 O/U 9.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set 2 O/U 10.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Set 1 O/U 10.5 | 50% |
| Los Cabos Open, Qualification: Borna Gojo vs Aidan Mayo Match O/U 23.5 | 50% |
| Completed Match | 4% |
Market context
Traders on decentralised prediction markets give 51% probability to los cabos open, qualification: borna gojo vs aidan mayo. This market refers to the tennis match between Borna Gojo and Aidan Mayo in the Los Cabos Open, Qualification, originally scheduled for July 26, 2026 at 12:00AM ET. This market will resolve to 'Borna…
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- 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.
- 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 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.
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