Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Best Prediction Markets.
Active sub-markets
| Grass Court Championships: Paula Badosa vs Coco Gauff | 100% Paula Badosa | 0% Coco Gauff |
| Completed Match | 100% YES | 0% NO |
| Grass Court Championships: Paula Badosa vs Coco Gauff Set 2 Winner | 100% Badosa | 0% Gauff |
| Grass Court Championships: Paula Badosa vs Coco Gauff Set 2 O/U 9.5 | 0% Over | 100% Under |
| Grass Court Championships: Paula Badosa vs Coco Gauff Match O/U 22.5 | 100% Over | 0% Under |
| Grass Court Championships: Paula Badosa vs Coco Gauff Total Sets: O/U 2.5 | 100% Over 2.5 | 0% Under 2.5 |
Market context
Paula Badosa and Coco Gauff are scheduled to meet in the Grass Court Championships on 17 June 2026, with the winner advancing in the tournament draw. The match carries a settlement window extending to 24 June, allowing seven days for completion before the market resolves to a tie-break outcome. Current crowd-implied probability sits at 100% for YES, suggesting near-certainty that one player will advance, though this reflects the baseline expectation rather than directional confidence in either competitor.
Badosa's grass-court record presents a mixed historical picture. Her 2022 Roland Garros title came on clay, and whilst she has shown capability on faster surfaces, grass remains a less-established terrain in her tournament portfolio. Gauff, conversely, reached the Wimbledon quarter-finals in 2024 and has demonstrated improving grass-court form across multiple seasons. Historical matchups between players of their calibre on grass typically favour the player with more recent tournament success on the surface, though Badosa's overall ranking and consistency can offset surface-specific advantages.
Key variables for traders include injury status updates, which typically emerge in the week preceding major tournaments, and any scheduling adjustments that might affect player preparation or fatigue levels. The WTA's official draw confirmation, expected around early June, will confirm seeding and bracket positioning. Recent tournament results from both players in May 2026 will provide the most current form indicators. The 100% probability reflects the structural certainty that the match will likely occur and resolve to a winner rather than conviction about the outcome itself; meaningful divergence between sportsbook lines and prediction-market pricing, should it emerge closer to the event date, would signal genuine analytical disagreement on the head-to-head matchup.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), 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
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 it cost to trade on Best Prediction Markets?
- Zero. Best Prediction Markets routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- 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 Grass Court Championships: Paula Badosa vs Coco Gauff on Best Prediction Markets
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