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 16, 11:00 AM EST
Polymarket
This market refers to the tennis match between Iryna Shymanovich and Mary Stoiana in the Newport, originally scheduled for July 9, 2026 at 11:00AM ET. This market will resolve to 'Iryna Shymanovich' if Iryna Shymanovich advances against Mary Stoiana. This market will resolve to 'Mary Stoiana' if Mary Stoiana advances against Iryna Shymanovich. 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 Iryna Shymanovich and Mary Stoiana in the Newport, originally scheduled for July 9, 2026 at 11:00AM ET. This market will resolve to 'Iryna Shymanovich' if Iryna Shymanovich advances against Mary Stoiana. This market will resolve to 'Mary Stoiana' if Mary Stoiana advances against Iryna Shymanovich. 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 participant bases and incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets aggregate the beliefs of traders risking real capital on outcomes. This market may show higher or lower implied probabilities than traditional sportsbooks, depending on which venue's participants have fresher information or stronger conviction. Comparing the two can reveal where consensus is strongest or where informed traders see value.
On Polymarket, traders set the odds through an automated market maker that adjusts prices based on buy and sell volume. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The more capital flowing toward one outcome, the higher its price climbs, and vice versa. This continuous repricing mechanism means the market reflects real-time conviction from participants and can shift rapidly if new information emerges about either player's form, injury status, or head-to-head record.
This market resolves around Jul 16, 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—whether Shymanovich or Stoiana wins the Newport event. Until that point, traders can continue to buy and sell shares, allowing prices to adjust as the match approaches and new developments emerge.
Several factors could shift trader sentiment before Jul 16, 2026. Recent tournament results, injury announcements, or changes in either player's ranking or form could trigger significant repricing. Head-to-head history, court surface preference, and pre-match commentary from analysts may also influence how traders assess each competitor's chances. Weather conditions, scheduling delays, or unexpected withdrawals would cause sharp market moves, as would any credible reporting on player fitness or mental readiness in the days leading up to the match.