TOTAL VOLUME:
$134b
24H VOL:
$103,397,351
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,410,176,180
399,592
Markets across
30,097
events
MATCHED EVENTS:
2,622
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 22, 6:00 PM EST
Polymarket
This market refers to the tennis match between J.J. Wolf and Spencer Johnson in the Lincoln, originally scheduled for July 15, 2026 at 6:00PM ET. This market will resolve to 'J.J. Wolf' if J.J. Wolf advances against Spencer Johnson. This market will resolve to 'Spencer Johnson' if Spencer Johnson advances against J.J. Wolf. 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 ATP Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between J.J. Wolf and Spencer Johnson in the Lincoln, originally scheduled for July 15, 2026 at 6:00PM ET. This market will resolve to 'J.J. Wolf' if J.J. Wolf advances against Spencer Johnson. This market will resolve to 'Spencer Johnson' if Spencer Johnson advances against J.J. Wolf. 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 ATP Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets aggregate the collective beliefs of traders risking real capital. This market may show higher or lower implied probabilities than traditional sportsbooks, depending on which venue's participants have stronger conviction or better information about the upcoming match. Comparing the two can reveal where smart money sees value.
On Polymarket, this market is priced through an automated market maker that converts trader activity into real-time probability estimates. 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 ratio of buy and sell orders determines the odds you see displayed. As more traders accumulate shares in one outcome, the price adjusts upward; conversely, selling pressure lowers it. This dynamic pricing mechanism ensures the market reflects the latest consensus among active participants.
This market resolves around Jul 22, 2026, once the match concludes and the result is verifiable from credible public sources. The outcome will be confirmed based on the official match result, with no ambiguity over who won. Until that point, traders can continue to buy and sell shares as new information emerges and confidence levels shift.
Several factors could shift odds before Jul 22, 2026. Injury announcements or player withdrawals would trigger sharp repricing, as would recent performance data or head-to-head records becoming public. Court surface conditions, weather forecasts, and betting line movements at major sportsbooks often signal professional opinion and can influence trader behavior. Social media momentum, expert commentary, and any last-minute roster or scheduling changes may also drive trading volume and price swings in this market.