ProbCastOdds Reliability
TodayTop MoversMarketsWhat ChangedAccuracyWatchlist
⌘K
Checking…
Hot Markets
Will the Fed increase interest rates by 25 bps after the September 2026 meeting?50%▼9.0Will there be no change in Fed interest rates after the September 2026 meeting?50%▲10.0Will Grand Theft Auto VI Extended Look get less than 20 million views on week 1?1%▼75.7Will Elon Musk post 160-179 tweets from August 28 to September 4, 2026?0%▼4.2Will Elon Musk post 180-199 tweets from August 28 to September 4, 2026?15%▼12.5Will WTI Crude Oil (WTI) hit (HIGH) $95 in September?63%▲8.0Will Grand Theft Auto VI Extended Look get between 20 and 22 million views on week 1?87%▲64.0Will GPT 6 be released by September 15th?89%▲48.4Will Elon Musk post 220-239 tweets from August 28 to September 4, 2026?26%▲7.5Will Bitcoin be higher 7 days from now?6%▼19.3Will Oracle report Q1 FY2027 revenue of at least $19.15 billion? (September 10, 2026 earnings)81%▲31.2Openai Astra publically available before September 7th 202687%▲10.6Will Flávio Bolsonaro win the 2026 Brazilian presidential election?43%▲4.0Will Grand Theft Auto VI Extended Look get between 22 and 24 million views on week 1?12%▼5.2Ethereum price at Sep 3, 2026 at 5pm EDT?44%▲3.5Will GPT-6 be released by December 31, 2026?95%▼2.3
Will the Fed increase interest rates by 25 bps after the September 2026 meeting?50%▼9.0Will there be no change in Fed interest rates after the September 2026 meeting?50%▲10.0Will Grand Theft Auto VI Extended Look get less than 20 million views on week 1?1%▼75.7Will Elon Musk post 160-179 tweets from August 28 to September 4, 2026?0%▼4.2Will Elon Musk post 180-199 tweets from August 28 to September 4, 2026?15%▼12.5Will WTI Crude Oil (WTI) hit (HIGH) $95 in September?63%▲8.0Will Grand Theft Auto VI Extended Look get between 20 and 22 million views on week 1?87%▲64.0Will GPT 6 be released by September 15th?89%▲48.4Will Elon Musk post 220-239 tweets from August 28 to September 4, 2026?26%▲7.5Will Bitcoin be higher 7 days from now?6%▼19.3Will Oracle report Q1 FY2027 revenue of at least $19.15 billion? (September 10, 2026 earnings)81%▲31.2Openai Astra publically available before September 7th 202687%▲10.6Will Flávio Bolsonaro win the 2026 Brazilian presidential election?43%▲4.0Will Grand Theft Auto VI Extended Look get between 22 and 24 million views on week 1?12%▼5.2Ethereum price at Sep 3, 2026 at 5pm EDT?44%▲3.5Will GPT-6 be released by December 31, 2026?95%▼2.3
Home/Macro / Fed/Will Mariano Navone win the 2026 Men's US Open?
PolymarketMacro / FedUpdated 2m ago

Will Mariano Navone win the 2026 Men's US Open?

Market probability
0.5%
Little changed over 24 hours
9 days until the scheduled event
Deadline: September 12, 2026 at 8:00 PM ET
Resolution follows the outcome of the scheduled event.

No meaningful repricing — the probability is steady.

The pricing is supported by healthy trading volume and market depth, a tight spread.

How credible was the move?

Three separate questions — a move can be genuine while the latest price is still settling. Methodology →

Move validity

Is the move backed by real trading and depth?

Strong

The pricing is supported by healthy trading volume and market depth, a tight spread.

Consensus stability

Has the market settled at the new probability?

Stable

The probability has held near its current level over the past several hours.

Contract clarity

Will the rules resolve without ambiguity?

High

The resolution rules are relatively specific, with a named source and a defined deadline.

Recent trade activity$227.9 traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

The 2026 U.S. Open tennis tournament is scheduled for August 23 - September 13, 2026.

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

The 2026 U.S. Open tennis tournament is scheduled for August 23 - September 13, 2026. This market will resolve to the player that wins the 2026 U.S. Open Men’s Singles Tournament. If at any point it becomes impossible for a listed player to win the 2026 U.S. Open Men’s Singles Tournament per the rules of the tournament, the corresponding market will resolve to “No”. If the 2026 U.S. Open Men’s Singles Tournament is cancelled, postponed after October 31, 2026, or there is otherwise no winner declared within that timeframe, this market will resolve to “Other”. 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.

What could move this market next?

  • The scheduled event takes placeSeptember 12, 2026 at 8:00 PM ET

    The contract resolves on the event's outcome.

Derived from the contract's own mechanics as of Sep 3, 5:44 AM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: high · expected error ±10 pts.

Quote-drivenLegacy movement classifier: watch

What's happening

medium classifier confidence
Quote-driven

A tight, deep, quote-driven book with little executed flow. The price is stable but reflects resting quotes more than active trading.

Market data

24h volume

$84.7K

Change (pts)1H0.06H+0.224H+0.27D+0.2
Score breakdown — Movement, Liquidity & Trust

ProbCast Trust Score

77/ 100 · Medium

Reasonably supported. Generally reliable, with minor caveats. Main caveat: limited history.

ProbCast measures how reliable this market probability appears — not what to trade.

Movement4

Magnitude of recent probability change

Liquidity80

Related markets

Will the Fed decrease interest rates by 50+ bps after the September 2026 meeting?

0%YESTrust 94
Polymarket$296.1K 24h

Will the Fed increase interest rates by 50+ bps after the September 2026 meeting?

1%YESTrust 94
Polymarket$450.9K 24h

Will the Fed decrease interest rates by 25 bps after the September 2026 meeting?

1%YESTrust 100
ProbCast — Odds Reliability

Know whether prediction-market odds can be trusted. ProbCast analyzes liquidity, market activity, spreads, and price movement to help distinguish meaningful repricing from thin-market noise.

Questions? Chat with us on Telegram
TodayTop MoversEventsAll MarketsWhat ChangedVenue DivergencePolymarket vs KalshiMethodologyCoverageMeta's ArenaWatchlistTerms of UsePrivacyCrypto
  • Tight spread on a liquid, calm market

The latest price is a usable but caveated read — weigh it with the market state.

More details — reliability score, dynamics, durability
Reliability score
51Medium
Where the price path tends to go next351 observed
  • Stable consensus95%
  • Choppy / mean-reverting4%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life ~8h
PredictabilityStable

Secondary read: leaning toward Trading normally.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Liquidity

$75.9K

Total volume

$141.8K

Category
Macro / Fed
Venue
Polymarket
Open interest
—
Spread
0.8 pts
Best bid
0.1%
Best ask
0.9%
7-day range
0.4% – 0.9%
Resolves
Sep 12, 2026

Depth of the order book and volume

Trust breakdown

77/100 · Medium

Reasonably supported. Generally reliable, with minor caveats. Main caveat: limited history.

  • Liquidity anchor+56
  • Price steadiness+29
  • Limited history-8
Trust score77 / 100
How these scores work →
View on Polymarket

ProbCast provides prediction-market data and analytics for informational purposes only. Not financial, trading, betting, investment, legal, or tax advice. Market-implied probabilities can be wrong, illiquid, manipulated, or affected by ambiguous resolution rules.

Polymarket$604.8K 24h

Will there be no change in Fed interest rates after the September 2026 meeting?

50%YESTrust 77
Polymarket$872.9K 24h

Will the Fed increase interest rates by 25 bps after the September 2026 meeting?

50%YESTrust 75
Polymarket$865.9K 24h

ULTIMATUM GAME: two random traders negotiate this market's resolution

52%YESTrust 30
ManifoldṀ503 24h
Macro / Fed
Politics
AI / Tech
Geopolitics

ProbCast provides prediction-market data and analytics for informational purposes only. Not financial, trading, betting, investment, legal, or tax advice. ProbCast is not a betting platform, exchange, or broker and does not provide buy or sell recommendations. Intended for users 18+; availability of prediction-market activity varies by jurisdiction. Venue data is aggregated from third parties and may be delayed or inaccurate. See our Terms of Use.

Market-implied probabilities can be wrong, illiquid, manipulated, or affected by ambiguous resolution rules.

© 2026 ProbCast · [email protected]