Analytics
“Will an American player win the 2026 US Open?” is a prediction market on Polymarket with two tradeable outcomes, Yes and No. The Yes price is the market's implied probability that the question resolves Yes. Quotes can change as orders are updated or filled; a quoted price does not guarantee an available fill at that price.
The venue reports this market as closed. Its scheduled close is Sep 13, 2026. No resolved outcome is inferred from a closed or suspended state.
Vultax observes this market from Polymarket's public order book and data API and keeps its own record: 3 hourly price points from Sep 11, 2026 to Sep 13, 2026 (Yes between 37.0% and 52.5%); 10 loaded holder wallets, the largest ten holding 100.0% of the loaded shares; 58 recent public fills from 19 wallets. Each figure carries its observation time; nothing here is a return forecast.
Public Polymarket market/event context is available; Vultax source-pack coverage is tracked separately.
This resolved market has no live orderbook depth; the public close quote is shown for context.
Nine stops, one per figure on this page. Each stop says what the number is, why it matters, and what it reads right now for this market.
Each outcome trades as a share that pays $1 if it wins and nothing if it loses. Prices are quoted in cents, and Yes plus No add up to about one dollar.
The 2026 U.S. Open tennis tournament is scheduled for August 23 - September 13, 2026. This market will resolve to "Yes" if a player representing the United States of America wins the 2026 U.S. Open Men's Singles Tournament or the 2026 U.S. Open Women's Singles Tournament. Otherwise, this market will resolve to "No". A champion in either singles draw is sufficient for this market to resolve to "Yes"; both draws do not need to be won by an American player. Doubles, mixed doubles, wheelchair, and junior events do not count toward this market. A player's nationality will be determined by the country listed for that player in the official 2026 U.S. Open draws and results. A player listed as representing the United States of America qualifies regardless of birthplace or other citizenships held. If neither the 2026 U.S. Open Men's Singles Tournament nor the 2026 U.S. Open Women's Singles Tournament has a declared champion by October 31, 2026, 11:59 PM ET, this market will resolve to "No". The primary resolution source will be official information from the U.S. Open (https://www.usopen.org/index.html); however, a consensus of credible reporting may also be used.
Official listing: polymarket.com/event/will-an-american-player-win-the-2026-us-open
The Yes price read as a chance. A share at 21.5¢ implies 21.5%, but fees, available depth and who participates can affect that price. A market price is not a calibrated forecast or a verdict.
Dollar value of shares that changed hands in the last 24 hours. High volume means the price is being tested by real money; low volume means a few trades can move it.
Reported dollars resting in the order book. The available size on your side, at the prices you would accept, determines what can fill. A large total alone does not guarantee an execution near the quoted price.
The gap between the best bid and the best ask. A tight spread makes entry and exit cheap; a wide spread is a cost paid on every round trip.
The wallets holding the most shares on each side, and how much of the loaded sample the largest ten control. Concentration shows whether a market is a crowd or a handful of large positions.
The public fills, newest first: which wallet bought or sold which outcome, at what price, and when. It is the market's own diary, and every wallet on it links to a trader profile.
Hourly closes of the Yes price. The range shows how sure or split the crowd has been; the move shows which way it has been changing its mind.
Trading stops at the close time. The outcome is then settled by the resolution source named in the rules. A closed market is not resolved until the venue reports it, so the two states are shown separately.
| Yes |
| 500 |
| Strident-Kebab-Department | Yes | 220.48 |
| degendi | Yes | 100 |
| balthazar | Yes | 82.52 |
| a5533 | Yes | 50 |
| erFiodena | Yes | 39.46 |
| PPMT | Yes | 30 |
| CaptMrv | Yes | 11.9 |
| bjprolo | Yes | 8 |
| dinutheminu | Yes | 2.27 |