TOTAL VOLUME:

$134.2b

24H VOL:

$134,145,987

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,441,166,947

406,422

Markets across

30,383

events

MATCHED EVENTS:

2,688

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem
polymarket

What is the result of ISABELA DE MATTOS SILVA vs Julia Castellanos Alem?

Volume:
$973

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem

 - Polymarket

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 16, 2026

Closed: Sep 16, 1:11 PM EST

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Polymarket

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$973
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

100%
Yes 100¢No 0¢
0.2¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set 1 Winner

100%
Yes 100¢No 0¢
0.9¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set 2 Winner

100%
Yes 100¢No 0¢
0.9¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Total Sets: O/U 2.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set 1 O/U 8.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set 1 O/U 9.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set 1 O/U 10.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set 2 O/U 8.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set 2 O/U 9.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set 2 O/U 10.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Match O/U 21.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Match O/U 22.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Match O/U 23.5

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

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem Set Handicap +/-1.5

100%
Yes 100¢No 0¢
0.2¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

W15 Sao Luis: ISABELA DE MATTOS SILVA vs Julia Castellanos Alem 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 ISABELA DE MATTOS SILVA and Julia Castellanos Alem in the W15 Sao Luis, Main Draw, originally scheduled for September 16, 2026 at 11:30AM ET. This market will resolve to 'ISABELA DE MATTOS SILVA' if ISABELA DE MATTOS SILVA advances against Julia Castellanos Alem. This market will resolve to 'Julia Castellanos Alem' if Julia Castellanos Alem advances against ISABELA DE MATTOS SILVA. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 30, 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 ISABELA DE MATTOS SILVA and Julia Castellanos Alem in the W15 Sao Luis, Main Draw, originally scheduled for September 16, 2026 at 11:30AM ET. This market will resolve to 'ISABELA DE MATTOS SILVA' if ISABELA DE MATTOS SILVA advances against Julia Castellanos Alem. This market will resolve to 'Julia Castellanos Alem' if Julia Castellanos Alem advances against ISABELA DE MATTOS SILVA. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 30, 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 Sao Luis tennis match tracks the current odds for who will win, along with the price history and 24-hour trading volume. Currently, the total volume for this market is $973, with $973 traded in the last 24 hours. The dashboard provides a visual representation of how traders are pricing the likelihood of each player winning, allowing you to see shifts in sentiment over time. This information is updated in real-time, reflecting the latest activity on Polymarket.

Prediction market odds often reflect the collective wisdom of a diverse group of traders, which can sometimes differ from sportsbook odds. Sportsbooks set their lines based on statistical models and expert analysis, but may also incorporate a margin for profit. This market allows individuals to express their own predictions, potentially leading to odds that more accurately reflect the true probability of an outcome, especially as new information becomes available. Discrepancies can arise due to differing opinions, access to information, or simply the dynamics of supply and demand within the prediction market.

This market resolves around Sep 23, 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 W15 Sao Luis tennis match between ISABELA DE MATTOS SILVA and Julia Castellanos Alem. The platform will verify the result against established tennis authorities and reporting sources to ensure accuracy and transparency. Traders holding shares in the winning outcome will be paid out according to the final market price at resolution.

Several factors could influence the price of shares in this market before resolution. Any news regarding player form, injuries, or changes in playing conditions could significantly impact trader sentiment. Unexpected upsets in other matches within the tournament might also shift expectations. Furthermore, large trading volume from informed participants could signal a change in perceived probabilities. Monitoring tennis news sources and observing trading activity on Polymarket will be key to understanding potential market movements leading up to Sep 23, 2026.