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 22, 5:44 PM EST
Polymarket
This market refers to the tennis match between Fiona Ferro and Erika Andreeva in the Palermo, originally scheduled for July 22, 2026 at 5:00AM ET. This market will resolve to 'Fiona Ferro' if Fiona Ferro advances against Erika Andreeva. This market will resolve to 'Erika Andreeva' if Erika Andreeva advances against Fiona Ferro. 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 Fiona Ferro and Erika Andreeva in the Palermo, originally scheduled for July 22, 2026 at 5:00AM ET. This market will resolve to 'Fiona Ferro' if Fiona Ferro advances against Erika Andreeva. This market will resolve to 'Erika Andreeva' if Erika Andreeva advances against Fiona Ferro. 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 markets and traditional sportsbooks price events differently because they operate on distinct mechanisms. Sportsbooks set odds based on their risk management and profit margins, while prediction markets derive prices from real-time trader consensus—essentially crowdsourced probability estimates. Prediction markets often reflect sharper, more dynamic pricing because traders have direct financial incentive to correct mispricings. For this market, comparing the prediction market odds to major sportsbook lines can reveal where professional bettors and casual traders diverge in their assessment of the outcome.
On Polymarket, this market is priced through an automated market maker that converts trader buy and sell orders into continuous probability quotes. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders purchase shares representing each possible outcome, and the price of those shares reflects the collective belief about which result is more likely. As more capital flows into one outcome, its price rises and the competing outcome's price falls, creating a self-balancing mechanism. This dynamic pricing ensures the market remains responsive to new information and trader conviction throughout the event window.
This market resolves around Jul 29, 2026, once the tennis match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official match result—which player wins the competition. Until that point, traders can continue buying and selling shares as new information emerges, odds shift, and the event approaches. Resolution typically occurs within hours of the final point being played.
Several factors could shift trader sentiment and market odds before resolution. Recent player performance, head-to-head records, and ranking changes provide fundamental context that traders monitor closely. Court conditions, weather, and tournament draw details can influence expectations. Injury reports or withdrawal announcements would trigger sharp repricing. Social media momentum, expert commentary, and betting syndicate activity may also sway the market. As the match date approaches, any news about player form, mental state, or external circumstances could prompt traders to rebalance their positions and move the odds.