TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 22, 5:00 AM EST
Polymarket
This market refers to the tennis match between Harriet Dart and Maria Sakkari in the Athens Open, originally scheduled for July 15, 2026 at 5:00AM ET. This market will resolve to 'Harriet Dart' if Harriet Dart advances against Maria Sakkari. This market will resolve to 'Maria Sakkari' if Maria Sakkari advances against Harriet Dart. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 WTA Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Harriet Dart and Maria Sakkari in the Athens Open, originally scheduled for July 15, 2026 at 5:00AM ET. This market will resolve to 'Harriet Dart' if Harriet Dart advances against Maria Sakkari. This market will resolve to 'Maria Sakkari' if Maria Sakkari advances against Harriet Dart. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 WTA Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they reflect different incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets are driven by trader consensus and real-money skin-in-the-game dynamics. For this match, comparing the implied probability on Polymarket to major sportsbook lines can reveal where the crowd's conviction differs from bookmaker pricing. Prediction markets sometimes lead sportsbooks in pricing efficiency, especially as match day approaches and new information surfaces.
On Polymarket, this market is priced through an automated market maker that converts trader orders into real-time probability quotes. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Shares representing each outcome trade continuously, and the current price of a winning share reflects the market's live estimate of that outcome's likelihood. As traders deposit capital and place bets, the price adjusts algorithmically, ensuring the market stays responsive to new developments and trader conviction throughout the lead-up to the match.
This market resolves around Jul 22, 2026, once the Athens Open match between Dart and Sakkari concludes and the result is verified against credible public sources. The outcome is determined by the official match result—which player wins the contest. No ambiguity typically surrounds professional tennis outcomes, making resolution straightforward and final once the match is complete and confirmed through established sports reporting channels.
Several factors can shift odds before the match begins. Injury announcements or withdrawal news involving either player would trigger sharp repricing. Recent tournament results, head-to-head records, and surface-specific form all influence trader positioning. Court conditions, weather forecasts, and any last-minute lineup changes can also sway the market. Additionally, if one player advances or exits earlier rounds at Athens, that momentum may ripple into this specific matchup's odds, reflecting updated assessments of form and fatigue heading into the encounter.