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US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald
polymarket

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald

Volume:
$51,638

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Match O/U 21.5

 - Polymarket

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Match O/U 21.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 25, 2026

Closed: Aug 24, 7:57 PM EST

polymarket

Polymarket

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Match O/U 21.5

View
100%
1%
Yes 100¢No 0¢
0.1¢
N/A
$69
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald

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0%
23%
Yes 0¢No 100¢
—
N/A
$48,986
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set 1 Winner

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0%
Yes 0¢No 100¢
—
N/A
$2,496
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Match O/U 22.5

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0%
99%
Yes 0¢No 100¢
—
N/A
$52
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Game Spread +/-4.5

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0%
100%
Yes 0¢No 100¢
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N/A
$33
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set 2 Winner

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set 2 O/U 8.5

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Total Sets: O/U 2.5

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set 1 O/U 8.5

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set Handicap +/-1.5

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set 1 O/U 9.5

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set 2 O/U 9.5

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set 1 O/U 10.5

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Set 2 O/U 10.5

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

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald Match O/U 23.5

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0%
99%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 16

Description

This market refers to the tennis match between Stefano Napolitano and Mackenzie McDonald in the US Open, Qualification ATP, originally scheduled for August 24, 2026 at 3:30PM ET. This market will resolve to 'Stefano Napolitano' if Stefano Napolitano advances against Mackenzie McDonald. This market will resolve to 'Mackenzie McDonald' if Mackenzie McDonald advances against Stefano Napolitano. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 7, 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 Stefano Napolitano and Mackenzie McDonald in the US Open, Qualification ATP, originally scheduled for August 24, 2026 at 3:30PM ET. This market will resolve to 'Stefano Napolitano' if Stefano Napolitano advances against Mackenzie McDonald. This market will resolve to 'Mackenzie McDonald' if Mackenzie McDonald advances against Stefano Napolitano. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 7, 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 tracks real-time odds and price history for the US Open ATP qualifier, showing how traders price the chances of each player winning. It also displays current volume of $50,381 and 24-hour volume of $50,381, letting you see how activity shifts as the match approaches.

On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders manually set the odds through buying and selling contracts, which determines the current implied probability for each outcome. The price adjusts continuously based on trading volume and any new information about the players’ readiness or recent performances, capturing the collective wisdom of participants on that venue.

This market resolves around Aug 31, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by the official match result, which is checked against reliable sports news sources and tournament records after the match concludes.

Injuries, changes in player rankings, or recent match performances can shift this market as the event nears. Media updates, practice session reports, or weather conditions — if they affect play — may also cause traders to adjust their bets, moving the odds based on new information about each competitor’s chances.