TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 17, 4:42 PM EST
Polymarket
This market refers to the tennis match between ISABELA DE MATTOS SILVA and Catarina Melleiro in the W15 Sao Luis, Main Draw, originally scheduled for September 17, 2026 at 11:30AM ET. This market will resolve to 'ISABELA DE MATTOS SILVA' if ISABELA DE MATTOS SILVA advances against Catarina Melleiro. This market will resolve to 'Catarina Melleiro' if Catarina Melleiro 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 October 1, 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.
This market refers to the tennis match between ISABELA DE MATTOS SILVA and Catarina Melleiro in the W15 Sao Luis, Main Draw, originally scheduled for September 17, 2026 at 11:30AM ET. This market will resolve to 'ISABELA DE MATTOS SILVA' if ISABELA DE MATTOS SILVA advances against Catarina Melleiro. This market will resolve to 'Catarina Melleiro' if Catarina Melleiro 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 October 1, 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.
Typically, prediction market odds reflect a wisdom-of-the-crowd perspective, often differing from initial sportsbook offerings. Sportsbooks set lines to balance action and incorporate a profit margin, while this market allows traders to express their own independent assessments. If a significant discrepancy emerges between this market and sportsbook odds, it could indicate that traders possess information not yet fully priced into the sportsbook lines, or have differing opinions on the players' relative strengths. It’s common to see convergence as the event approaches and more information becomes available.
This market resolves around Sep 24, 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 Catarina Melleiro. The platform will verify the result against publicly available sources to determine the winning player and settle the market accordingly. Traders should monitor official tournament results for confirmation of the final outcome.
Several factors could influence the trading activity in this market. Any news regarding player form, injuries, or changes in playing conditions could significantly shift the probabilities. Unexpected results in earlier rounds of the tournament, or analysis from tennis experts, might also lead to adjustments in the market price. Furthermore, large trading volume from informed participants could indicate a change in sentiment, potentially moving the odds as others react to their activity. Monitoring tennis news and observing trading patterns will be key to understanding potential market movements.