TOTAL VOLUME:

$134.2b

24H VOL:

$134,145,987

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,441,166,947

406,422

Markets across

30,383

events

MATCHED EVENTS:

2,688

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Insights
Indices
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
Oleksandra Oliynykova vs Reese Brantmeier: Set 1 Winner
kalshi

Oleksandra Oliynykova vs Reese Brantmeier: Set 1 Winner

Volume:
$88,481

Oleksandra Oliynykova

 - Kalshi

Oleksandra Oliynykova - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 1, 2026

Closed: Sep 1, 5:49 PM EST

kalshi

Kalshi

View
Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Oleksandra Oliynykova

View
100%
49%
Yes 100¢No 0¢
1¢
N/A
$66,101
N/A
N/A
$61,298
Settled
Yes
kalshi

Reese Brantmeier

View
0%
Yes 0¢No 100¢
1¢
N/A
$22,380
N/A
N/A
$19,806
Settled
No
Total markets: 2

Description

This market tracks the outcome of the first set in a professional tennis match between Oleksandra Oliynykova and Reese Brantmeier at the 2026 US Open. It determines which player will claim victory in that initial set, reflecting the competitive dynamics of their early-game performance.

Kalshi

The market resolves based on which player wins the first set of the specified match. If the match does not occur before any play due to injury, walkover, forfeiture, or cancellation, it resolves to a fair price. Postponements or delays keep the market open until the rescheduled match concludes, with settlement within two weeks. If a player retires during the match, markets that can be settled based on completed play will resolve accordingly, while unresolved markets settle at a fair market price determined by the Exchange. Kalshi disclaims any official affiliation with the governing league, and all trademarks remain property of their respective owners.

Frequently asked questions

On Kalshi, the Set 1 winner market dashboard tracks real-time odds, price fluctuations, and 24-hour volume for the Set 1 winner market. It shows how traders on this platform are pricing the chances of each player claiming the first set, updated continuously as new bets are placed. The dashboard highlights the top outcome with a displayed probability and reflects total volume of $88,481 and recent activity through $87,913.

This market resolves around Aug 30, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by the official match result, and traders should monitor reputable sports news sources for confirmation as the event date nears.

Key signals include player form in the days leading up to the match, injury updates, and any strategic changes announced by coaches or teams. High-profile media coverage or betting trends on Kalshi can also shift trader sentiment. As Aug 30, 2026 approaches, practice sessions, prior head-to-head performances, and even weather conditions — if relevant — may cause rapid swings in this market’s odds.