US Open 2026 Predictions
The official tournament window, verified men's and women's winner-market structure, resolution rules, and research checkpoints before the final Grand Slam of 2026.
Published July 24, 2026 · Tournament window: August 23–September 13, 2026 · Next planned refresh: August 17, 2026
The answer first
The official US Open site lists the 2026 tournament from August 23 through September 13 in New York. Two exact Polymarket winner events—one for men's singles and one for women's singles—were active and not closed in the July 24 research check. Together they had 62 open player contracts accepting orders: 22 men and 40 women. Those boards do not ask who reaches a semifinal, wins a particular match, or finishes with the best ranking; each asks who becomes the champion of its specified 2026 US Open singles tournament. This page maps the calendar, separate event inventories, settlement source, elimination rule, and cancellation fallback without freezing a fast-moving quote or claiming to know either winner.
Official US Open 2026 timeline
The official US Open schedule surface, both exact Gamma events, their component markets, and the complete local Polymarket View archive were checked. The men's and women's events were active, not closed, and distinct from the site's completed Wimbledon match analysis.
One week before the official window, this hub will recheck the event schedule, live player inventory, open/closed status, contract descriptions, source hierarchy, and the relationship between displayed prices and executable order-book depth.
The US Open site lists August 23 as the start of its 2026 window. Session-level timing, draws, and orders of play should come from the official event schedule rather than from a prediction-market API timestamp.
As players become unable to win under tournament rules, their reviewed player contracts can resolve to No. A change from active to closed is a contract-state update, not proof that every displayed price was previously accurate.
The two reviewed events use September 13 as their top-level end date. The champion declared for each singles tournament—not the end-time field alone—determines the corresponding winning outcome under the written rules.
If a singles tournament is cancelled, postponed beyond October 31, or has no winner declared within the contract's stated timeframe, the reviewed event description assigns the result to Other. This edge case should not be replaced by assumptions based on a normal schedule.
What the verified prediction markets cover
The public Gamma snapshot at approximately 14:04 UTC on July 24 showed two exact, active winner events. The counts below distinguish every row retained in event metadata from the smaller set that was active, not closed, and accepting orders at the check time.
Men's singles winner
22 open player contracts accepting orders out of 49 total rows in the event inventory. Event metadata reported about $4.38 million in cumulative volume and $1.12 million in liquidity at the snapshot.
Women's singles winner
40 open player contracts accepting orders out of 67 total rows in the event inventory. Event metadata reported about $5.96 million in cumulative volume and $1.08 million in liquidity at the snapshot.
Combined research surface
The two top-level events therefore represented roughly $10.34 million in reported cumulative volume and $2.20 million in liquidity. These are timestamped API fields, not a guarantee of future depth.
Separate champions
The men's and women's events settle independently. A price, withdrawal, or result in one draw does not resolve the other event, even though both use the same official tournament window.
Player-specific binaries
Each open row asks whether one named player will win. The displayed YES price belongs to that binary order book; it is not an official seed, sportsbook line, or direct statement from the US Open.
Inventory can change
Total rows can include contracts that are closed or no longer accepting orders. Always recheck active, closed, accepting-orders, bid, ask, and depth fields before interpreting an old inventory count.
US Open market resolution: six checks that matter
1. Match the event to the draw
Confirm whether the contract names Men's Singles or Women's Singles. A player winning doubles, mixed doubles, qualifying, juniors, or a warm-up tournament would not satisfy the reviewed singles-winner question.
2. Champion, not advancement
A named player must win the specified tournament for that player's YES contract to resolve positively. Reaching the final, leading a live match, or becoming the highest remaining seed is not the same result.
3. Impossibility resolves No
The reviewed text says a player's contract resolves No when it becomes impossible for that player to win under tournament rules. Record the official result and current contract state instead of inferring settlement from a social post.
4. Official source first
The event descriptions name official US Open information as the primary resolution source, while allowing a consensus of credible reporting. A model projection, odds screen, or unofficial bracket is not the named primary evidence.
5. Read the Other fallback
Cancellation, a postponement past October 31, or no declared winner within the stated timeframe sends the event to Other under the reviewed wording. That rule matters even if the normal calendar makes it unlikely.
6. Save the current wording
Market descriptions and status can be clarified over time. A useful research record contains the exact event slug, question, description, UTC timestamp, status, and source—not only one cropped price screenshot.
Why search demand should rise before September 13
This hub is published 30 days before the official start so search engines have time to discover a durable URL before the field, draw, opening-round, and finals waves. The topic was not selected because of a match or player headline on July 24. The US Open calendar is scheduled independently, and both winner events have existed since January.
Field and draw wave
As the tournament approaches, broad searches such as US Open 2026 predictions should narrow into player, draw, injury, and winner-market questions. The most useful refresh is therefore after the open field and official schedule become clearer.
Opening-week wave
Attention should move from preseason probability to path-dependent questions: which side of a draw a player occupies, whether a player remains eligible, and whether a quote has enough depth to be informative.
Final-round wave
Near the last rounds, search and market activity can rise while the number of possible champions falls. Resolution can become close without being complete; the official result remains the decisive evidence.
Research workflow for US Open 2026 predictions
Start with the official schedule
Verify the August 23–September 13 window and later session details on the US Open site. Do not derive the tournament calendar from a market end time or an unofficial sports calendar.
Separate men and women
Open the correct event before recording a price. The event title, draw, player name, and singles category should all agree; similar athlete names or copied tabs can create simple classification errors.
Read bid, ask, and depth
Use the prediction-market odds guide and 55¢ probability explainer to distinguish a last trade from an executable quote and to document the spread.
Check tournament status
For prior tennis context, compare the Wimbledon quarterfinal market analysis and the Sinner–Zverev liquidity snapshot, but do not transfer old grass-court prices into a new event.
Understand the product
The prediction markets versus sports betting guide explains why a tradable binary contract, settlement source, and order book differ from a conventional fixed-odds ticket.
Control downside and uncertainty
The risk-management guide and accuracy guide explain why even a high displayed probability is not certainty and why settlement wording matters.
Use movers as a prompt
The biggest-movers watchlist can highlight a price change for investigation. It cannot tell whether the cause was injury news, a draw update, thin liquidity, or a single order.
Compare other future events carefully
The Ballon d'Or 2026 guide and Emmys 2026 guide share calendar-driven search waves, but their nominees, official sources, and settlement rules are unrelated to the US Open.
Frequently asked questions
When is the 2026 US Open?
The official US Open site lists the 2026 tournament window as August 23 through September 13, 2026. Check the official event schedule for session-level dates and any later changes.
Are there active US Open 2026 prediction markets?
Yes. At the July 24, 2026 14:04 UTC research check, the exact men's and women's US Open winner events were active and not closed. There were 22 open men's player contracts and 40 open women's player contracts accepting orders.
What do the US Open winner markets resolve on?
The reviewed men's event resolves to the player who wins the 2026 US Open Men's Singles Tournament, while the women's event resolves to the player who wins the Women's Singles Tournament. They are separate events with separate player contracts.
What happens when a listed player can no longer win?
The reviewed rules say a listed player's corresponding contract resolves No once it becomes impossible for that player to win under the tournament rules. Researchers should still read the current contract text before relying on a status label.
What happens if the 2026 US Open is cancelled or postponed?
The reviewed event descriptions say the event resolves to Other if the relevant singles tournament is cancelled, postponed beyond October 31, 2026, or has no declared winner within that timeframe.
When will this US Open 2026 guide be refreshed?
The next planned refresh is August 17, 2026, with an earlier update if the official schedule or contract rules change materially. The open field, draw information, and market status will be checked again before the tournament window.
Sources and methodology
- Official US Open event schedule — official tournament schedule surface and the August 23–September 13, 2026 window. Checked July 24, 2026.
- Official US Open site — named primary resolution source in both reviewed prediction-market events. Checked July 24, 2026.
- Polymarket Gamma: 2026 Men's US Open Winner — exact event status, player inventory, cumulative volume/liquidity fields, singles-winner rule, impossibility rule, official source, and cancellation fallback. Checked July 24, 2026 at approximately 14:04 UTC.
- Polymarket Gamma: 2026 Women's US Open Winner — exact women's event status, player inventory, cumulative volume/liquidity fields, and parallel resolution wording. Checked July 24, 2026 at approximately 14:04 UTC.
- Public men's US Open event and public women's US Open event — live surfaces for current quotes, depth, status, and contract text. Prices are intentionally not reproduced here.
Candidate and cannibalization review covered the complete 98-entry blog index, all 98 article HTML files, all eleven pre-existing event hubs, the 118-URL pre-publication sitemap, proactive state, current-day publisher logs and reports, and the latest local GSC snapshot/watchlist. Existing Wimbledon pages cover completed match-specific analysis rather than the dated 2026 US Open winner intent, so this durable event URL fills a separate search need.