TOTAL VOLUME:

$134.2b

24H VOL:

$130,522,377

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,438,389,636

404,028

Markets across

30,214

events

MATCHED EVENTS:

2,681

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko
polymarket

Who will win Gauthier Onclin vs Vitaliy Sachko?

Volume:
$314,604

Completed Match

 - Polymarket

Completed Match - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 25, 2026

Closed: Aug 25, 3:26 PM EST

polymarket

Polymarket

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

Completed Match

View
100%
1%
Yes 100¢No 0¢
0.1¢
N/A
$354
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set Handicap +/-1.5

100%
83%
Yes 100¢No 0¢
0.1¢
N/A
$6
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set 1 O/U 9.5

100%
46%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko

0%
69%
Yes 0¢No 100¢
—
N/A
$312,382
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set 1 Winner

0%
64%
Yes 0¢No 100¢
—
N/A
$1,632
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set Handicap +/-1.5

0%
46%
Yes 0¢No 100¢
—
N/A
$206
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set 2 Winner

0%
65%
Yes 0¢No 100¢
—
N/A
$20
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set 1 O/U 8.5

100%
18%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set 2 O/U 8.5

100%
1%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Match O/U 21.5

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

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Total Sets: O/U 2.5

0%
39%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set 2 O/U 9.5

100%
1%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Match O/U 22.5

100%
56%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set 1 O/U 10.5

100%
68%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Set 2 O/U 10.5

100%
1%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Match O/U 23.5

100%
58%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Gauthier Onclin vs Vitaliy Sachko Game Spread +/-3.5

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

Description

This market refers to the tennis match between Gauthier Onclin and Vitaliy Sachko in the US Open, Qualification ATP, originally scheduled for August 25, 2026 at 11:00AM ET. This market will resolve to 'Gauthier Onclin' if Gauthier Onclin advances against Vitaliy Sachko. This market will resolve to 'Vitaliy Sachko' if Vitaliy Sachko advances against Gauthier Onclin. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 8, 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 Gauthier Onclin and Vitaliy Sachko in the US Open, Qualification ATP, originally scheduled for August 25, 2026 at 11:00AM ET. This market will resolve to 'Gauthier Onclin' if Gauthier Onclin advances against Vitaliy Sachko. This market will resolve to 'Vitaliy Sachko' if Vitaliy Sachko advances against Gauthier Onclin. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 8, 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

This market resolves around Sep 1, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by the official match conclusion, reflecting which player advances from the qualification round, and is then automatically applied to settle all positions.