TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 14, 2:00 PM EST
Polymarket
This market refers to the tennis match between Valentino Grippo and Tomas Jordi Leston in the ITF Men San Salvador De Jujuy, originally scheduled for July 7, 2026 at 2:00PM ET. This market will resolve to 'Valentino Grippo' if Valentino Grippo advances against Tomas Jordi Leston. This market will resolve to 'Tomas Jordi Leston' if Tomas Jordi Leston advances against Valentino Grippo. 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 Valentino Grippo and Tomas Jordi Leston in the ITF Men San Salvador De Jujuy, originally scheduled for July 7, 2026 at 2:00PM ET. This market will resolve to 'Valentino Grippo' if Valentino Grippo advances against Tomas Jordi Leston. This market will resolve to 'Tomas Jordi Leston' if Tomas Jordi Leston advances against Valentino Grippo. 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 traditional 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 are driven purely by trader belief and capital allocation. Sportsbooks may adjust faster for sharp money, whereas prediction markets can lag if retail traders dominate. However, over time both venues tend to converge on similar probabilities as arbitrageurs exploit gaps. Comparing this market's odds to major sportsbooks can reveal whether traders or bookmakers are more bullish on a particular outcome.
On Polymarket, traders set the odds by buying and selling outcome shares in an automated market maker (AMM) pool. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each share reflects the collective belief of all participants: as more capital flows into one outcome, its price rises and the implied probability increases. Liquidity depth and order flow determine how quickly prices move in response to new information. The market remains open to trading until the event concludes, with prices continuously adjusting based on fresh trades and market sentiment.
This market resolves around Jul 14, 2026, once the ITF San Salvador De Jujuy match between Grippo and Leston concludes and the result is verifiable from credible public sources. The outcome is determined by the official match result—either a win for Grippo or a win for Leston. No draws or voids are typically offered in tennis match markets. Traders holding shares in the winning outcome receive their payout, while losing shares expire worthless. Resolution timing depends on when the match is played and the result is officially confirmed.
Several factors could shift odds significantly before the match. Injury reports or player withdrawals would trigger sharp repricing. Recent form updates, head-to-head records, and surface-specific performance data often spark trading activity as new information surfaces. Court conditions, weather forecasts, and lineup announcements closer to the event date can also move the needle. Betting syndicates and sharp traders may enter with large positions if they identify value, creating visible volume spikes. Social media sentiment and analyst commentary can influence retail traders, though prediction markets typically weight hard data more heavily than speculation.