Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket Alternative Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket Alternative → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Polymarket Alternative → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Polymarket Alternative → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Polymarket Alternative → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Polymarket Alternative → |
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 Polymarket Alternative.
Active sub-markets
Market context
Diane Parry and Amanda Anisimova are scheduled to meet in the Roland Garros women's draw on 30 May 2026. The current crowd-implied probability of 51% for Parry suggests near-parity in market assessment, though this reflects genuine uncertainty rather than consensus. Across major prediction platforms, the odds representation differs materially: Polymarket displays this as approximately 1.96 decimal odds for Parry, whilst Kalshi and Betfair would show tighter spreads given their higher liquidity on tennis matchups. The settlement window closes 6 June 2026, allowing six days post-scheduled date for match completion before the 50-50 tie-break resolution clause activates.
Parry's recent form and ranking trajectory matter considerably here. The French player has shown improvement on clay surfaces, her preferred terrain, though Anisimova's power game and experience in Grand Slam environments present a formidable counter-narrative. Historical head-to-head records between these players remain limited, making comparable precedent sparse; traders should monitor both players' qualifying-round performances and any injury declarations in the week preceding the match. Recent WTA announcements regarding draw seeding and court assignments typically arrive 48 hours before play, which could shift market probabilities if either player receives a favourable or unfavourable positioning.
The 51% probability reflects genuine competitive balance rather than a clear favourite. Fee structures vary across platforms—Polymarket charges 2% on settlement, whilst Kalshi's model differs—making position sizing relevant for traders comparing expected value across venues. Watch for late withdrawals or weather delays, which could trigger the tie-break resolution clause if the match extends beyond 7 June without completion.
Methodology
We read Roland Garros WTA: Diane Parry vs Amanda Anisimova 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 quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.
Resolution & payout
Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.
Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.
FAQ
- Is this market available outside the US?
- Polymarket Alternative is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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.
- 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.
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