TOTAL VOLUME:
$134.2b
24H VOL:
$129,159,707
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,442,132,418
404,744
Markets across
30,489
events
MATCHED EVENTS:
2,691
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 22, 2:28 PM EST
Polymarket
This market refers to the doubles tennis match between Friend/Isomura and Ayeni/Bianchi in the Winnipeg, originally scheduled for July 21, 2026 at 10:00AM ET. This market will resolve to 'Friend/Isomura' if the team of Friend/Isomura advances against Ayeni/Bianchi. This market will resolve to 'Ayeni/Bianchi' if the team of Ayeni/Bianchi advances against Friend/Isomura. 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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 ATP Tour. A consensus of credible reporting may also be used.
This market refers to the doubles tennis match between Friend/Isomura and Ayeni/Bianchi in the Winnipeg, originally scheduled for July 21, 2026 at 10:00AM ET. This market will resolve to 'Friend/Isomura' if the team of Friend/Isomura advances against Ayeni/Bianchi. This market will resolve to 'Ayeni/Bianchi' if the team of Ayeni/Bianchi advances against Friend/Isomura. 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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 ATP Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they serve different purposes and audiences. Sportsbooks set odds to balance their book and manage risk, while prediction markets let traders freely price outcomes based on their beliefs. In many cases, prediction markets have proven more accurate at forecasting results than traditional sportsbooks, especially when large numbers of informed traders participate. Comparing the two can reveal where one venue sees value the other has missed, though both reflect real money at stake and genuine conviction.
On Polymarket, this market is priced through an automated market maker and order-book mechanism where traders directly set bid and ask prices. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Shares representing each outcome trade continuously, and the current price reflects the marginal trader's willingness to buy or sell. Higher prices indicate stronger belief in that outcome. You can place limit or market orders to enter or exit, and your trades move the price in real time based on supply and demand.
This market resolves around Jul 28, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official match result—which pair wins the doubles competition. Until that point, traders can continue to buy and sell shares as new information and match developments emerge. Resolution is automatic once the event is finalized and reported by authoritative tennis sources.
Several factors could shift prices before resolution. Player injuries, withdrawals, or last-minute lineup changes would immediately impact odds. Pre-match commentary, recent head-to-head records, and court conditions at the venue can influence trader sentiment. Betting action from sharp bettors or large trades on the platform itself often triggers price swings as other traders react. Real-time match developments—early set results, momentum shifts, or unexpected performances—will drive the most significant moves as the event unfolds and traders update their expectations.