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: Jul 15, 8:00 AM EST
Polymarket
This market refers to the tennis match between Valentina Steiner and Sapfo Sakellaridi in the ITF Women Aschaffenburg, originally scheduled for July 8, 2026 at 8:00AM ET. This market will resolve to 'Valentina Steiner' if Valentina Steiner advances against Sapfo Sakellaridi. This market will resolve to 'Sapfo Sakellaridi' if Sapfo Sakellaridi advances against Valentina Steiner. 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
This market refers to the tennis match between Valentina Steiner and Sapfo Sakellaridi in the ITF Women Aschaffenburg, originally scheduled for July 8, 2026 at 8:00AM ET. This market will resolve to 'Valentina Steiner' if Valentina Steiner advances against Sapfo Sakellaridi. This market will resolve to 'Sapfo Sakellaridi' if Sapfo Sakellaridi advances against Valentina Steiner. 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
Prediction market odds and traditional sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and manage risk, while prediction markets aggregate beliefs from traders risking real capital on outcomes. For this market, comparing Polymarket prices to major sportsbooks can reveal whether professional bettors and casual traders view the match differently. Prediction markets sometimes offer sharper or more reactive pricing, especially as match day approaches and new information emerges.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each outcome reflects the collective confidence of all active traders at any given moment. As new information surfaces—player form, injury reports, or betting patterns—traders adjust their positions, causing prices to shift. This continuous repricing mechanism means the market odds update dynamically without relying on a fixed bookmaker, allowing prices to respond quickly to breaking news or shifting sentiment.
This market resolves around Jul 15, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will reflect the actual winner of the match as documented by official tennis records and reputable sports news sources. Until that point, traders can continue to adjust positions based on pre-match developments, player updates, or any other factors they believe affect the likely result. Resolution happens automatically once the match concludes and the winner is established.
Several catalysts could shift prices significantly before the match concludes. Player injuries, fitness updates, or withdrawal announcements would trigger immediate repricing as traders reassess probabilities. Recent tournament performance, head-to-head records, or surface-specific form could influence sentiment as the event approaches. Weather conditions, court assignments, or scheduling changes might also matter. Additionally, any major betting activity or sharp money flowing into one side could signal new information, prompting other traders to adjust their positions and move the market accordingly.