TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 29, 9:05 AM EST
Kalshi
This market tracks the outcome of the first set in the professional tennis match between Jelena Ostapenko and Harriet Dart at the 2026 Wimbledon Women's Singles Round of 128 on June 29. The winner of set 1 will determine the market resolution.
Resolution is determined by which player wins set 1 in the match. If the match does not occur before it begins due to injury, walkover, forfeiture, or cancellation, the market resolves to a fair price. If postponed or delayed, the market remains open until the rescheduled match concludes within two weeks. If a player retires, markets that can be unconditionally settled based on completed play resolve accordingly; those that cannot are resolved to fair market price at the Exchange's discretion.
Prediction market odds and sportsbook odds often diverge because they reflect different pricing mechanisms. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets like this one aggregate trader beliefs through continuous price discovery. Traders here are incentivized to identify mispricing relative to sportsbooks, so this market can sometimes offer sharper odds or reveal consensus that differs from traditional betting lines. Comparing the two can highlight where public perception and expert traders disagree on Ostapenko's chances in the first set.
On Kalshi, this market is priced through an order-book mechanism where traders submit bids and asks for shares representing each outcome. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each share reflects the collective assessment of all active traders, with the spread between buy and sell orders indicating uncertainty. As new information emerges—such as player form, court conditions, or head-to-head history—traders adjust their positions, moving the price up or down. This continuous repricing ensures the market stays responsive to real-world developments leading up to the match.
This market resolves around Jun 29, 2026, once the first set of the Ostapenko vs Dart match concludes and the winner is verified against credible public sources. The outcome is determined by which player wins the opening set according to official tournament records or reliable sports reporting. No further criteria apply—only the set winner matters for settlement. Traders should monitor the match schedule and any official updates from the tournament organizer to confirm timing.
Several factors could shift trader sentiment before the match begins. Recent performance data, injury reports, or changes in player rankings may prompt position adjustments. Court surface preference, weather conditions at the venue, and head-to-head records are common catalysts. News about player fitness, coaching changes, or psychological momentum from recent tournaments can also influence odds. Additionally, if either player withdraws or the match is postponed, the market dynamics may shift sharply. Traders typically react quickly to any official announcements or credible reporting that affects the perceived balance between the two competitors.