TOTAL VOLUME:

$134.1b

24H VOL:

$133,388,117

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,436,095,462

405,232

Markets across

30,526

events

MATCHED EVENTS:

2,693

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Tour
All
Sports
Stefanos Tsitsipas vs Arthur Fils: Set 1 Winner
kalshi

Stefanos Tsitsipas vs Arthur Fils: Set 1 Winner

Volume:
$315,200

Arthur Fils

 - Kalshi

Arthur Fils - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 31, 2026

Closed: Aug 31, 12:15 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

Arthur Fils

View
100%
32%
Yes 100¢No 0¢
1¢
N/A
$191,703
N/A
N/A
$153,818
Settled
Yes
kalshi

Stefanos Tsitsipas

0%
34%
Yes 0¢No 100¢
1¢
N/A
$123,498
N/A
N/A
$92,594
Settled
No
Total markets: 2

Intro

This market tracks which player will win the first set in the Stefanos Tsitsipas vs Arthur Fils match at the 2026 US Open, specifically focusing on whether Arthur Fils will claim set 1. On Kalshi, the current probability that Arthur Fils will win the first set stands at 71.0%, while Stefanos Tsitsipas winning the opening set is priced at 27.0%. The market will resolve based on the official match result, with the key catalyst being the match itself scheduled for August 30, 2026.

Kalshi

The market resolves based on the winner of the first set in the Stefanos Tsitsipas vs. Arthur Fils match at the 2026 US Open Men Singles Round of 128. If the match does not occur before any play due to injury, walkover, forfeiture, or cancellation, it will resolve to a fair price. Postponements or delays keep the market open until the rescheduled match concludes, with settlement within two weeks. In cases of retirement during the match, markets that can be settled based on completed play will do so, while unresolved markets will settle at a fair market price determined by the Exchange. Kalshi is not affiliated 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 and price movements for the Set 1 winner market, along with 24-hour volume of $312,389. It shows how traders on Kalshi are pricing the chances of each player claiming the opening set, updated continuously throughout the event lead-up and match.

On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Kalshi, traders actively set the odds for this market based on their assessments of each player’s likelihood to win the first set. The current top outcome reflects the aggregated expectations of participants, with price fluctuations driven by new analysis, player form, and in-play dynamics as the match approaches.

This market resolves around Aug 30, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The winner of the opening set will be determined during the match itself, and the result will be recorded and verified shortly afterward.

Key signals include player form, injury updates, and recent match statistics. Any last-minute changes to the lineup or playing conditions could shift expectations. Media commentary and expert analysis may also influence trader sentiment. As Aug 30, 2026 approaches, real-time performance in earlier rounds or practice sessions might cause rapid adjustments in this market, especially with low trading volume of $312,389.