TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 19, 1:15 PM EST
Polymarket
This market refers to the tennis match between Spencer Johnson and Noah Zamora in the ITF Men Rancho Santa Fe, originally scheduled for July 12, 2026 at 1:15PM ET. This market will resolve to 'Spencer Johnson' if Spencer Johnson advances against Noah Zamora. This market will resolve to 'Noah Zamora' if Noah Zamora advances against Spencer Johnson. 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
This market refers to the tennis match between Spencer Johnson and Noah Zamora in the ITF Men Rancho Santa Fe, originally scheduled for July 12, 2026 at 1:15PM ET. This market will resolve to 'Spencer Johnson' if Spencer Johnson advances against Noah Zamora. This market will resolve to 'Noah Zamora' if Noah Zamora advances against Spencer Johnson. 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 International Tennis Federation (ITF). 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 like this one aggregate the beliefs of traders risking real capital on the outcome. Traders in this market have strong financial motivation to price the match accurately, since mispriced shares represent profit opportunities. Over time, prediction markets have shown competitive or superior accuracy compared to traditional sportsbooks for many sporting events, though both can offer valuable perspectives on match probabilities.
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. Each outcome has a share price between 0 and 100 cents, where the price directly represents the market's implied probability. When traders buy shares in one outcome, the price rises and the competing outcome's price falls, creating a dynamic equilibrium. This mechanism ensures continuous pricing and allows you to enter or exit positions at transparent, algorithmically determined rates throughout the trading window.
This market resolves around Jul 19, 2026, after the match concludes and the result is verified against credible public sources. The outcome will be confirmed once official tournament records or reputable sports reporting confirms the winner. Traders holding shares in the correct outcome will receive their payout, while incorrect positions expire worthless. The exact timing of resolution depends on when the match is played and results are officially published, so monitor the event calendar and news feeds as the date approaches.
Several factors could shift trader sentiment before resolution. Injury announcements or withdrawal news involving either player would trigger sharp repricing. Recent tournament results, head-to-head records, or changes in ranking could influence perceived match strength. Court surface conditions, weather forecasts, and scheduling delays may also matter, since player form and fatigue vary by surface type and rest periods. Media coverage highlighting one player's recent form or psychological edge could sway the market. Watch for official tournament updates, player social media, and sports news outlets for developments that traders will quickly incorporate into their pricing.