TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 17, 11:00 AM EST
Polymarket
This market refers to the tennis match between Katie Volynets and Elizabeth Mandlik in the Newport, originally scheduled for July 10, 2026 at 11:00AM ET. This market will resolve to 'Katie Volynets' if Katie Volynets advances against Elizabeth Mandlik. This market will resolve to 'Elizabeth Mandlik' if Elizabeth Mandlik advances against Katie Volynets. 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 Katie Volynets and Elizabeth Mandlik in the Newport, originally scheduled for July 10, 2026 at 11:00AM ET. This market will resolve to 'Katie Volynets' if Katie Volynets advances against Elizabeth Mandlik. This market will resolve to 'Elizabeth Mandlik' if Elizabeth Mandlik advances against Katie Volynets. 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 odds that differ from traditional sportsbooks, especially as new information emerges or as one side attracts heavier trading volume. Comparing the two can reveal where the broader market sees value relative to professional oddsmakers.
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, and the price of each share reflects the collective assessment of all active traders. As more capital flows toward one outcome, its price rises and the opposing outcome's price falls, creating a dynamic equilibrium that updates throughout the trading window.
This market resolves around Jul 17, 2026, after the match concludes. The outcome will be confirmed once the result is verifiable from credible public reporting of the tennis event. At that point, shares backing the correct outcome will be redeemed at full value, while incorrect shares expire worthless. Early traders can exit their positions at any time before resolution by selling shares at the prevailing market price.
Several factors may shift odds before the match begins. Player injury reports, recent form and head-to-head records, court surface conditions, and weather forecasts can all trigger trading activity. News about player availability, coaching changes, or unexpected withdrawals would likely cause sharp price swings. Additionally, as the match date approaches, casual traders may enter the market, amplifying volatility. Live betting during the match itself—if the platform supports it—can also create rapid repricing based on in-play momentum.