TOTAL VOLUME:
$154.6b
24H VOL:
$323,326,361
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,969,435,260
419,363
Markets across
40,411
events
MATCHED EVENTS:
4,612
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 13, 8:49 AM EST
Polymarket
This market refers to the tennis match between Sophia Biolay and Midori Castillo Meza in the W35 Monastir, Qualifying, originally scheduled for October 13, 2026 at 4:30AM ET. This market will resolve to 'Sophia Biolay' if Sophia Biolay advances against Midori Castillo Meza. This market will resolve to 'Midori Castillo Meza' if Midori Castillo Meza advances against Sophia Biolay. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 27, 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 Sophia Biolay and Midori Castillo Meza in the W35 Monastir, Qualifying, originally scheduled for October 13, 2026 at 4:30AM ET. This market will resolve to 'Sophia Biolay' if Sophia Biolay advances against Midori Castillo Meza. This market will resolve to 'Midori Castillo Meza' if Midori Castillo Meza advances against Sophia Biolay. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 27, 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.
Prediction market odds often reflect the collective wisdom of a diverse group of bettors, potentially offering a different perspective than traditional sportsbooks. Sportsbooks set their lines based on statistical models and expert analysis, while this market aggregates the opinions of individuals actively trading on Polymarket. It’s common to see discrepancies between the two, especially before significant events or when new information emerges. Comparing the implied probabilities from both sources can provide a more comprehensive view of the potential outcome of the Biolay vs Castillo Meza match.
This market resolves around Oct 20, 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 W35 Monastir tennis match between Sophia Biolay and Midori Castillo Meza. The platform will rely on widely available and trusted sources to determine the winner and settle the market accordingly. Traders should monitor official tournament results as the resolution date approaches to understand how this market will be settled.
Several factors could influence the trading activity in this market before Oct 20, 2026. Any news regarding player injuries, changes in playing conditions, or updated rankings could shift market sentiment. Unexpected results in earlier rounds of the tournament, or even commentary from tennis analysts, could also impact the odds. Significant volume spikes on Polymarket would also be a signal to watch, as they often indicate new information or a change in prevailing opinions about the Biolay vs Castillo Meza match.