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: Jun 29, 7:06 AM EST
Kalshi
This market determines the winner of the first set in the professional tennis match between Sara Sorribes Tormo and Victoria Jimenez Kasintseva at the 2026 Wimbledon Women's Singles Round of 128 on June 29.
The market resolves based on which player wins set 1 of the match. If the match does not occur before it starts due to injury, walkover, forfeiture, or cancellation, the market resolves to a fair price. If the match is postponed or delayed, the market remains open and closes after 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 settled at Fair Market Price at the Exchange's discretion.
Prediction market odds and sportsbook odds often diverge because they reflect different mechanisms. Sportsbooks set fixed lines designed to balance action and lock in profit margins, while prediction markets like this one price outcomes through continuous trader participation. Sportsbook odds may incorporate sharper professional betting syndicates, whereas prediction markets aggregate a broader crowd of casual and expert traders. For tennis set winners, prediction market prices can sometimes react faster to live conditions or player form shifts, though sportsbook odds benefit from established risk management. Comparing both sources helps you identify value and validate your own assessment of the matchup.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell contracts representing each possible outcome. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Prices fluctuate based on supply and demand, with the current bid-ask spread reflecting the gap between buyers and sellers. Higher prices indicate stronger trader conviction that an outcome will occur, while lower prices suggest skepticism. You can enter limit or market orders to trade at your preferred price, and the platform matches buyers and sellers in real time. This mechanism ensures prices remain responsive to new information about player fitness, court conditions, or recent form.
This market resolves around Jun 29, 2026, once the first set of the Sorribes Tormo vs Jimenez Kasintseva match concludes. The outcome is determined by verified reporting of the official set result from credible public sources covering professional tennis. Kalshi will confirm the winner and settle all contracts accordingly. Until that time, prices may shift based on pre-match news, player updates, or betting flow. Mark your calendar to monitor this market as the event approaches, since odds typically tighten closer to match start.
Several catalysts could shift odds before the match begins. Injury announcements or withdrawal news involving either player would trigger sharp repricing, as would unexpected ranking changes or recent tournament results. Court surface conditions, weather forecasts, and head-to-head history often influence trader positioning in tennis markets. Media coverage highlighting one player's recent form or confidence could sway sentiment. Betting flow itself—large trades from informed traders—frequently moves prices as other participants react. Monitor official tour announcements, player social media, and pre-match commentary to stay ahead of market moves.