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Roland Garros WTA: Simona Waltert vs Katerina Siniakova

Five-platform snapshot of "Roland Garros WTA: Simona Waltert vs Katerina Siniakova" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

0% YES 100% NO Volume: $139K Closes: 31 May 2026
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Roland Garros WTA: Simona Waltert vs Katerina Siniakova

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Who Will Win Pick
polygram.ink
0% 100% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Open on Who Will Win →
Polymarket
polymarket.com
0% 100% 0% Geo-blocked in US/UK/EU USDC, on-chain Open on Who Will Win →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Open on Who Will Win →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Open on Who Will Win →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Open on Who Will Win →

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 Who Will Win.

Active sub-markets

Market context

Market consensus: 0% chance of roland garros wta: simona waltert vs katerina siniakova. Prediction markets aggregate real capital to produce this probability signal. This market refers to the tennis match between Simona Waltert and Katerina Siniakova in the Roland Garros WTA, originally scheduled for May 24, 2026 at 5:00AM ET. This market will…

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 Who Will Win, 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?
On Who Will Win, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
Is this market available outside the US?
Who Will Win 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 does it cost to trade on Who Will Win?
Zero. Who Will Win routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
Do I need to KYC for this market?
Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win triggers a quick verification flow that finishes in minutes.
and

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Live order book, 0% fees, USDC settlement in seconds.

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