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
US Open Juniors, Boys: Michael Antonius vs Simone Massellani
polymarket

What is the result of Michael Antonius vs Simone Massellani?

Volume:
N/A

US Open Juniors, Boys: Michael Antonius vs Simone Massellani

 - Polymarket

US Open Juniors, Boys: Michael Antonius vs Simone Massellani - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 7, 2026

Closed: Sep 7, 4:09 PM EST

polymarket

Polymarket

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani

View
0%
Yes 0¢No 100¢
—
N/A
N/A
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 Juniors, Boys: Michael Antonius vs Simone Massellani Set 1 Winner

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set 2 Winner

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Total Sets: O/U 2.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set 1 O/U 8.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set 1 O/U 9.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set 1 O/U 10.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set 2 O/U 8.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set 2 O/U 9.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set 2 O/U 10.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Match O/U 21.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Match O/U 22.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Match O/U 23.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set Handicap +/-1.5

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

US Open Juniors, Boys: Michael Antonius vs Simone Massellani Set Handicap +/-1.5

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 16

Description

This market refers to the tennis match between Michael Antonius and Simone Massellani in the US Open Juniors, Boys, originally scheduled for September 7, 2026 at 11:00AM ET. This market will resolve to 'Michael Antonius' if Michael Antonius advances against Simone Massellani. This market will resolve to 'Simone Massellani' if Simone Massellani advances against Michael Antonius. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 21, 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 Michael Antonius and Simone Massellani in the US Open Juniors, Boys, originally scheduled for September 7, 2026 at 11:00AM ET. This market will resolve to 'Michael Antonius' if Michael Antonius advances against Simone Massellani. This market will resolve to 'Simone Massellani' if Simone Massellani advances against Michael Antonius. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 21, 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

Generally, prediction market odds tend to reflect the wisdom of the crowd, often proving more accurate than traditional sportsbook odds, especially when considering information not readily captured by bookmakers. While sportsbooks set initial lines based on statistical models and expert analysis, this market incorporates a broader range of perspectives and real-time information from traders. Discrepancies can arise due to differing opinions on player form, potential upsets, or even external factors influencing the match. However, as the event approaches, the odds on Polymarket often converge with those found at major sportsbooks.

On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the likelihood of each outcome. The price of a share directly reflects the implied probability of that outcome occurring. As more traders participate, the market price adjusts to reflect the collective intelligence of the crowd. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The current price indicates what traders are willing to pay for a share representing the outcome of the US Open Juniors Boys match, effectively forecasting the likely winner.

This market resolves around Sep 14, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the US Open Juniors Boys match between Michael Antonius and Simone Massellani as reported by the tournament organizers. The platform will verify the result against publicly available sources to determine the winning outcome and settle the market accordingly. Traders should monitor official sources for the final result to understand when the market will be finalized.

Several factors could influence the trading activity and shift the odds in this market. Any news regarding player injuries, changes in playing conditions, or updated rankings could significantly impact trader sentiment. Unexpected upsets in earlier rounds of the tournament, or strong performances by either Michael Antonius or Simone Massellani in other matches, could also lead to price movements. Furthermore, significant betting activity or large trades on Polymarket itself can create momentum and influence the market’s direction before the match takes place.