TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 14, 6:30 AM EST
Polymarket
This market refers to the tennis match between Jeline Vandromme and Diana Martynov in the Contrexeville, originally scheduled for July 7, 2026 at 6:30AM ET. This market will resolve to 'Jeline Vandromme' if Jeline Vandromme advances against Diana Martynov. This market will resolve to 'Diana Martynov' if Diana Martynov advances against Jeline Vandromme. 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 Jeline Vandromme and Diana Martynov in the Contrexeville, originally scheduled for July 7, 2026 at 6:30AM ET. This market will resolve to 'Jeline Vandromme' if Jeline Vandromme advances against Diana Martynov. This market will resolve to 'Diana Martynov' if Diana Martynov advances against Jeline Vandromme. 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 odds to balance liability and extract a margin, while prediction markets aggregate the beliefs of traders risking real capital. This market may show different implied probabilities than traditional sports betting sites, particularly if one venue has sharper information flow or attracts specialized bettors. Comparing this market's odds to major sportsbooks can reveal where consensus differs and highlight potential value opportunities, though both reflect genuine uncertainty about the match outcome.
On Polymarket, traders set prices through an automated market maker mechanism where buying shares pushes the price up and selling pushes it down. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The current odds reflect the aggregate belief of all active traders at any given moment. As new information surfaces—such as player announcements, recent match results, or court conditions—traders adjust their positions, causing prices to shift. Liquidity and trading volume influence how quickly prices respond to news, and wider spreads may appear during low-activity periods.
Key catalysts include recent tournament performance by either player, injury announcements, and head-to-head matchup history. Court surface preference—since this event is held in Contrexeville—may favor one competitor's playing style. Ranking shifts, coaching changes, or public statements from either athlete can shift trader sentiment quickly. Weather conditions closer to the match date and any last-minute withdrawals or schedule changes will also influence pricing. Live trading during warm-up or early match play often triggers sharp repricing as traders gain real-time information about player form and court conditions.