TOTAL VOLUME:

$134.1b

24H VOL:

$113,466,932

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,423,222,590

402,751

Markets across

30,217

events

MATCHED EVENTS:

2,632

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Tour
All
Sports
US Open, Qualification ATP: Kei Nishikori vs Michael Antonius
polymarket

Who will win Kei Nishikori vs Michael Antonius?

Volume:
$187,494

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius

 - Polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 26, 2026

Closed: Aug 26, 7:04 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius

View
100%
49%
Yes 100¢No 0¢
0.1¢
N/A
$182,336
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set Handicap +/-1.5

100%
2%
Yes 100¢No 0¢
0.1¢
N/A
$3,374
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 2 Winner

100%
49%
Yes 100¢No 0¢
0.1¢
N/A
$436
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 1 Winner

100%
51%
Yes 100¢No 0¢
0.1¢
N/A
$350
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 1 O/U 9.5

100%
2%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Match O/U 21.5

0%
99%
Yes 0¢No 100¢
—
N/A
$689
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set Handicap +/-1.5

0%
98%
Yes 0¢No 100¢
—
N/A
$292
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Total Sets: O/U 2.5

0%
97%
Yes 0¢No 100¢
—
N/A
$12
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 1 O/U 8.5

100%
3%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 2 O/U 8.5

100%
3%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 2 O/U 9.5

100%
3%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Match O/U 22.5

0%
99%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 1 O/U 10.5

0%
97%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Set 2 O/U 10.5

0%
97%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Match O/U 23.5

0%
99%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Kei Nishikori vs Michael Antonius Game Spread +/-0.5

100%
1%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 17

Description

This market refers to the tennis match between Kei Nishikori and Michael Antonius in the US Open, Qualification ATP, originally scheduled for August 26, 2026 at 11:00AM ET. This market will resolve to 'Kei Nishikori' if Kei Nishikori advances against Michael Antonius. This market will resolve to 'Michael Antonius' if Michael Antonius advances against Kei Nishikori. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.

Polymarket

This market refers to the tennis match between Kei Nishikori and Michael Antonius in the US Open, Qualification ATP, originally scheduled for August 26, 2026 at 11:00AM ET. This market will resolve to 'Kei Nishikori' if Kei Nishikori advances against Michael Antonius. This market will resolve to 'Michael Antonius' if Michael Antonius advances against Kei Nishikori. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.

Frequently asked questions

On Polymarket, the dashboard for the Nishikori vs Antonius match market tracks real-time odds, price history, and 24-hour volume. It shows how traders on Polymarket are pricing the likelihood of each outcome, updated continuously throughout the event’s lifespan. The interface also displays total volume of $177,468 and recent trading activity of $177,374, giving users insight into market momentum and sentiment as the match approaches.

This market resolves around Sep 2, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by the official match conclusion, and the platform will update the market accordingly based on confirmed scores from accepted sports authorities.

Injuries, weather delays, or recent match performance for either player can shift this market as the event nears. Media updates, betting trends, and any last-minute changes to player availability may cause traders to adjust their positions, impacting odds. High volume spikes — such as $177,374 over a short period — often signal new information driving rapid price changes before the match begins.