Pronóstico: 2026 Women’s US Open Winner (Tennis)

Platform comparison

Market context

The 2026 U.S. Open Women’s Singles tournament is set to run from 23 August to 13 September 2026, with the winner to be crowned on the final day. On Polymarket, this contract currently trades at 23% YES, implying the crowd believes there is roughly a one-in-four chance that a listed player will win the title. The market is settled on-chain using USDC on the Polygon network, where conditional tokens represent shares in the outcome; a YES share redeemable at $1 reflects the collective probability assigned by traders.

Historically, similar markets for Grand Slam winners have seen sharp swings when top contenders face injury or form dips. For instance, Aryna Sabalenka, the current favourite at +200 odds, has dominated recent tournaments but has also shown vulnerability in past U.S. Opens when pressure mounted [1]. Iga Swiatek (+500) and Coco Gauff (+700) remain strong contenders, yet their odds suggest the market views them as less certain than Sabalenka. The 23% probability aligns with patterns where the favourite holds a narrow edge, but the field remains wide enough for surprises.

Traders should monitor the WTA tour schedule and player fitness updates leading into August, as any withdrawal or injury could shift probabilities dramatically. Recent reports indicate Sabalenka is in peak form, but her history of mid-tournament fatigue warrants caution [5]. Additionally, watch for official draw announcements and any changes to player rankings, which could alter the conditional token pricing. With the settlement window ending 13 September 2026, timely information will be critical for adjusting positions before the market resolves.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Qué Es, 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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Qué Es. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.