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, 4:30 AM EST
Polymarket
This market refers to the tennis match between Valentina Ryser and Maria Golovina in the ITF Women Vitoria-Gasteiz, originally scheduled for July 15, 2026 at 4:30AM ET. This market will resolve to 'Valentina Ryser' if Valentina Ryser advances against Maria Golovina. This market will resolve to 'Maria Golovina' if Maria Golovina advances against Valentina Ryser. 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 Ryser and Maria Golovina in the ITF Women Vitoria-Gasteiz, originally scheduled for July 15, 2026 at 4:30AM ET. This market will resolve to 'Valentina Ryser' if Valentina Ryser advances against Maria Golovina. This market will resolve to 'Maria Golovina' if Maria Golovina advances against Valentina Ryser. 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 sportsbook odds often diverge because they reflect different incentive structures. Sportsbooks set odds to balance their book and lock in profit margins, while prediction markets are priced by traders seeking to profit on accuracy. This market aggregates the collective judgment of many participants with real money at stake, which can sometimes reveal insights sportsbooks lag on. However, sportsbooks benefit from professional oddsmakers and sharp bettors, so neither venue is universally more accurate. Comparing both sources helps you identify where consensus is strongest and where outlier views might hold value.
On Polymarket, this market is priced through an automated market maker that converts trader activity into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Shares representing each outcome trade continuously; the price of a share reflects the crowd's estimated likelihood of that result. When more traders buy one outcome, its price rises and the implied probability increases. Conversely, selling pressure lowers the price. This mechanism ensures the market remains liquid and responsive to new information, with spreads typically tightening as volume grows and more participants contribute their views.
This market resolves around Jul 22, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official match result as recorded by the tournament organizer and widely reported tennis sources. Until that point, traders can continue to buy and sell shares as odds fluctuate. After resolution, all positions settle according to the verified outcome, and holders of the winning shares receive their payout. The exact timing may shift slightly if the match is postponed or rescheduled.
Several factors could shift odds significantly before the match begins. Player injury announcements, withdrawal news, or sudden changes in ranking or recent form typically trigger sharp repricing. Court surface conditions, weather forecasts, and head-to-head history often influence trader positioning as the event approaches. Media coverage highlighting one player's momentum or psychological edge can also sway sentiment. Closer to match day, warm-up tournament results or official draw confirmations may prompt final adjustments. Real-time developments during the match itself—such as early set outcomes or visible fatigue—will drive the most dramatic price swings as traders update their expectations.