TOTAL VOLUME:
$154.3b
24H VOL:
$219,029,434
24H TRANSACTIONS:
2,984,028,936
OPEN INTEREST:
$1,869,293,526
411,051
Markets across
40,408
events
MATCHED EVENTS:
4,377
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 16, 7:41 AM EST
Polymarket
This market refers to the tennis match between Julia Grabher and Ariana Geerlings in the Mallorca, originally scheduled for October 16, 2026 at 5:00AM ET. This market will resolve to 'Julia Grabher' if Julia Grabher advances against Ariana Geerlings. This market will resolve to 'Ariana Geerlings' if Ariana Geerlings advances against Julia Grabher. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 30, 2026, 11:59 PM ET (14 days after the scheduled start), 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 Julia Grabher and Ariana Geerlings in the Mallorca, originally scheduled for October 16, 2026 at 5:00AM ET. This market will resolve to 'Julia Grabher' if Julia Grabher advances against Ariana Geerlings. This market will resolve to 'Ariana Geerlings' if Ariana Geerlings advances against Julia Grabher. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 30, 2026, 11:59 PM ET (14 days after the scheduled start), 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 often offer a different perspective than traditional sportsbooks. Sportsbooks set their lines based on statistical models and attempt to balance action on both sides, while this market reflects the wisdom of the crowd. Frequently, prediction markets can be more accurate than sportsbook odds, especially when there is significant public information available. However, sportsbook odds may move more quickly in response to breaking news or injury reports, whereas this market's price changes are driven by traders responding to the same information. It's useful to compare both to form a well-rounded view.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief about the outcome of the Grabher vs Geerlings match. The price of these shares directly reflects the implied probability of each outcome. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate, the price converges towards what the market believes is the true probability. The current price indicates the collective assessment of all traders on Polymarket regarding the likelihood of each player winning.
This market resolves around Oct 23, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Grabher vs Geerlings match as reported by a recognized tennis authority. The platform will verify the result against these sources to determine which outcome is the winner. Traders who held shares in the correct outcome will be paid out according to the final market price at resolution, while those who bet on the incorrect outcome will forfeit their shares.
Several factors could influence the price of this market before Oct 23, 2026. Any news regarding player form, such as injury updates for either Julia Grabher or Ariana Geerlings, would likely cause significant movement. Unexpected changes in weather conditions at the match location could also impact the odds. Furthermore, major shifts in public opinion, perhaps driven by analyst predictions or social media discussion, could lead to changes in trading volume and price. Ultimately, any information that alters the perceived probability of either player winning has the potential to move this market.