This is a market to predict who will win a women's tennis Calendar Grand Slam in 2026. This market resolves to the single woman player who wins the Women's Singles titles at all four Grand Slam tournaments in 2026. The relevant 2026 Grand Slams are the Women's Singles tournaments in the 2026 Australian Open, French Open, U.S. Open, and Wimbledon. For the purpose of this market, a tournament victory is valid regardless of whether the final was won via a walkover, a mid-match retirement, or a standard completed match. If at any point it becomes impossible for a listed player to achieve a Calendar Grand Slam in 2026 (e.g. Sabalenka does not win the 2026 Australian Open) this market will resolve immediately to "No". If at any point it becomes impossible for any listed player to achieve a Calendar Grand Slam in 2026 (e.g. Sabalenka wins the 2026 Australian Open but loses in the first round of 2026 French Open) this market will resolve immediately to "None". Otherwise, this market will resolve when the results of the final 2026 Grand Slam are official. If any of the 2026 Grand Slam Women' Singles Tournaments are cancelled, postponed after December 31, 2026 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to “None”. The primary resolution source for this market will be information from the organizers of the Grand Slam tournaments; however, a consensus of credible reporting may also be used.
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View Full Flow DashboardYES: 97% | NO: 3%
$1.1M total volume
Neutral - balanced flow
Dec 31, 2026
Sports prediction markets often incorporate real-time information faster than traditional betting lines. This market has attracted $1.1M in trading volume. The 97% probability reflects the current market consensus based on all available information.
High Volume: With $1.1M traded, this is one of the most actively traded markets. Higher volume typically means more accurate price discovery.
Buy YES if you believe this will happen. At the current price of $0.97, you'd receive $1.00 if correct—a potential 3% return.
Buy NO if you believe it won't happen. At $0.03, you'd receive $1.00 if correct—a potential 3674% return.
Share prices reflect the market's probability estimate. If you think the true probability differs from 97%, there may be a trading opportunity.