2026 Women’s US Open Winner (Tennis)

Platform comparison

Active sub-markets

Market context

The 2026 U.S. Open Women's Singles tournament will take place at Flushing Meadows from 23 August through 13 September. The 28% implied probability reflects a fragmented field with no dominant favourite; historically, the U.S. Open has crowned winners across a wide range of seedings and career trajectories, from established top-10 players to unseeded or lower-ranked competitors who peaked during the hard-court swing. Serena Williams won the title three times (2012, 2013, 2014) whilst ranked world number one, yet Samantha Stosur claimed it in 2011 from outside the top four seeds, and Sloane Stephens won in 2017 at world number 83. This variance in outcomes—driven by form, injury status, and the specific demands of hard courts in late summer—explains why no single player commands overwhelming odds.

Traders monitoring this market should track injury announcements and ranking movements through the 2026 season, particularly in the six weeks preceding the tournament. The WTA's official schedule and injury reports, typically published via WTA.com and major tennis news outlets, will signal which top-ranked players are fit and in form. Withdrawal deadlines and qualifying-round results in late August will clarify the final field composition. Deposit and withdrawal infrastructure—SEPA transfers, Klarna instalment options, and USDC settlement—becomes material once traders commit capital; book depth will deepen as the tournament approaches and as major warm-up events (Canadian Open, Cincinnati Masters) provide form indicators in the weeks immediately before.

Methodology

We track 2026 Women’s US Open Winner (Tennis) on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

Is this market available outside the US?

Polymarket Deposit UK 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.

What does it cost to trade on Polymarket Deposit UK?

Zero. Polymarket Deposit 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Deposit UK triggers a quick verification flow that finishes in 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.