2026 Women’s US Open Winner (Tennis)

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Active sub-markets

Market context

The U.S. Open women's singles tournament will take place from 23 August to 13 September 2026 at Flushing Meadows in New York. A YES share represents a bet that a specific named player will win the title; a NO share bets against that outcome. The market's 26% implied probability reflects the combined likelihood across all listed contenders, meaning the crowd estimates roughly a one-in-four chance that the designated player (or players, depending on market structure) captures the trophy.

Historical context shows that women's tennis has grown increasingly competitive at the Grand Slam level over recent years. Between 2020 and 2024, the U.S. Open women's singles title was won by five different players—Naomi Osaka, Emma Raducanu, Iga Świątek, Aryna Sabalenka, and Madison Keys—reflecting significant turnover. No player has won the U.S. Open more than twice in the modern era, and injury or form fluctuations routinely alter favourites' prospects. The 26% probability aligns with a field where multiple contenders hold realistic chances rather than one dominant favourite.

Traders should monitor player fitness reports and ranking trajectories through 2025 and into 2026, particularly regarding injury recovery timelines and clay-court performance leading into the hard-court season. The WTA calendar and any scheduling changes announced by the USTA will affect preparation patterns. Withdrawal announcements typically arrive weeks before the tournament; late retirements or visa complications have occasionally altered outcomes at Flushing Meadows. Surface-specific form—hard-court results from summer 2026 events—will provide the most reliable signal as the settlement window approaches.

Methodology

This page reviews 2026 Women’s US Open Winner (Tennis) across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Prediction Market UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Prediction Market UK, 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.

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 Prediction Market UK?

Zero. Prediction Market UK 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.