TOTAL VOLUME:

$134.2b

24H VOL:

$126,590,312

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,439,516,703

404,175

Markets across

30,277

events

MATCHED EVENTS:

2,685

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes
polymarket

What is the result of Mateus Napoli da Silveira vs Mateo Barreiros Reyes?

Volume:
$176

Completed Match

 - Polymarket

Completed Match - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 15, 2026

Closed: Sep 15, 1:44 AM EST

polymarket

Polymarket

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

Completed Match

View
100%
Yes 100¢No 0¢
18¢
N/A
$176
N/A
N/A
N/A
Settled
Yes
polymarket

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes

100%
Yes 100¢No 0¢
0.4¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Set 1 Winner

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Set 2 Winner

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Total Sets: O/U 2.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes 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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Set 1 O/U 9.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Set 1 O/U 10.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes 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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Set 2 O/U 9.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Set 2 O/U 10.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Match O/U 21.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Match O/U 22.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Match O/U 23.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Set Handicap +/-1.5

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

M15 Belém: Mateus Napoli da Silveira vs Mateo Barreiros Reyes Set Handicap +/-1.5

0%
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 Mateus Napoli da Silveira and Mateo Barreiros Reyes in the M15 Belém, Qualifying, originally scheduled for September 14, 2026 at 1:00PM ET. This market will resolve to 'Mateus Napoli da Silveira' if Mateus Napoli da Silveira advances against Mateo Barreiros Reyes. This market will resolve to 'Mateo Barreiros Reyes' if Mateo Barreiros Reyes advances against Mateus Napoli da Silveira. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 28, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.

Polymarket

This market refers to the tennis match between Mateus Napoli da Silveira and Mateo Barreiros Reyes in the M15 Belém, Qualifying, originally scheduled for September 14, 2026 at 1:00PM ET. This market will resolve to 'Mateus Napoli da Silveira' if Mateus Napoli da Silveira advances against Mateo Barreiros Reyes. This market will resolve to 'Mateo Barreiros Reyes' if Mateo Barreiros Reyes advances against Mateus Napoli da Silveira. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 28, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.

Frequently asked questions

On Polymarket, the dashboard for the Belém tennis match tracks the current odds reflecting the probability of either Mateus Napoli da Silveira or Mateo Barreiros Reyes winning. You’ll find a price history showing how these odds have changed over time, giving insight into how the market is perceiving each player’s chances. The dashboard also displays the 24-hour trading volume, currently at $176, and the total volume traded to date, which is $176. This provides a view of market activity and interest in this particular match.

Often, prediction market odds offer a different perspective than traditional sportsbooks. Sportsbooks incorporate a 'vig' or commission into their odds, ensuring a profit margin, while Polymarket allows traders to directly assess the probability of an outcome. This can lead to discrepancies, with this market potentially reflecting the collective wisdom of informed traders. It’s common to see prediction markets outperform sportsbooks, especially when there's significant public information available and a motivated group of participants analyzing the event. However, sportsbook odds still provide a valuable benchmark for comparison.

This market resolves around Sep 21, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the M15 Belém tennis match between Mateus Napoli da Silveira and Mateo Barreiros Reyes. The platform will verify the winner based on publicly available match results, ensuring a transparent and accurate determination of the market's outcome. Traders should monitor official tennis reporting sources for confirmation of the final result.

Several factors could influence the odds in this market. Any news regarding player form, such as injury reports or recent match performances, would likely cause shifts. Unexpected weather conditions at the tournament location could also play a role, potentially favoring one player's style of play over another. Furthermore, significant betting activity on Polymarket itself can move the market, as large trades indicate strong conviction in a particular outcome. Monitoring tennis news and observing trading volume will be key to understanding potential price movements before Sep 21, 2026.