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 20, 3:00 AM EST
Polymarket
This market refers to the tennis match between Emiliana Arango and Tamara Zidansek in the Iasi Open, originally scheduled for July 13, 2026 at 3:00AM ET. This market will resolve to 'Emiliana Arango' if Emiliana Arango advances against Tamara Zidansek. This market will resolve to 'Tamara Zidansek' if Tamara Zidansek advances against Emiliana Arango. 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 Emiliana Arango and Tamara Zidansek in the Iasi Open, originally scheduled for July 13, 2026 at 3:00AM ET. This market will resolve to 'Emiliana Arango' if Emiliana Arango advances against Tamara Zidansek. This market will resolve to 'Tamara Zidansek' if Tamara Zidansek advances against Emiliana Arango. 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 are driven by traders risking real capital on their beliefs about the outcome. For this match, comparing the implied probability on a prediction market to the implied probability from major sportsbooks can reveal where the two communities disagree—sometimes prediction markets lead, sometimes they lag. Neither is inherently more accurate; both offer useful signals when analyzed together.
On Polymarket, this market is priced through an automated market maker that converts trader orders into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As traders buy and sell shares representing each outcome, the price adjusts continuously to reflect the latest consensus. The current odds reflect the aggregate belief of all active participants; larger trades move the price more sharply, while smaller positions cause gradual shifts. This mechanism ensures the market remains liquid and responsive to new information.
This market resolves around Jul 20, 2026, once the match concludes and the result is verified against credible public sources. The outcome will be determined by which player wins the competition at the Iasi Open. Until that point, traders can continue to buy and sell their positions as new information emerges—such as player form, injury reports, or head-to-head records—that might shift expectations about the final result.
Several factors could shift trader positioning before resolution. Recent performance by either player on hard courts or at similar tournaments may trigger repricing. Injury announcements, changes in seeding, or draws involving stronger or weaker opponents could alter perceived difficulty. Pre-match commentary from analysts and betting syndicates often influences prediction market prices. Weather conditions, court surface updates, or last-minute lineup changes announced closer to the event date may also prompt traders to adjust their positions, causing noticeable price swings in the final hours.