TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 1, 2:58 PM EST
Polymarket
This market refers to the tennis match between Florencia Massardo Brain and Katya Ramirez in the W15 Porto Velho, Main Draw, originally scheduled for September 1, 2026 at 10:30AM ET. This market will resolve to 'Florencia Massardo Brain' if Florencia Massardo Brain advances against Katya Ramirez. This market will resolve to 'Katya Ramirez' if Katya Ramirez advances against Florencia Massardo Brain. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 15, 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 Florencia Massardo Brain and Katya Ramirez in the W15 Porto Velho, Main Draw, originally scheduled for September 1, 2026 at 10:30AM ET. This market will resolve to 'Florencia Massardo Brain' if Florencia Massardo Brain advances against Katya Ramirez. This market will resolve to 'Katya Ramirez' if Katya Ramirez advances against Florencia Massardo Brain. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 15, 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 in this market often differ from traditional sportsbook lines due to the decentralized nature of trading. While sportsbooks may set their lines based on broader public betting trends and proprietary models, prediction markets let participants bet directly on their beliefs, sometimes creating sharper or more volatile prices.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders determine the price through their bets, which set the odds based on supply and demand. The current top outcome reflects the consensus view of participants, with the implied probability indicating favorability. As new information emerges — such as player form or weather updates — these bets can shift, adjusting the market price to align with evolving expectations.
This market resolves around Sep 8, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will be determined by the official match conclusion, and the platform will update the market accordingly based on that verified information.
In the coming weeks, several signals could influence this market. Key factors include player injuries, changes in form or performance, weather conditions on match day, and any last-minute tournament updates. As these developments unfold, traders will react, potentially causing noticeable shifts in odds. The market will also respond to broader betting trends as the event draws closer to Sep 8, 2026.