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: Jun 30, 7:45 PM EST
Polymarket
In the upcoming MLB game between the Arizona Diamondbacks and St. Louis Cardinals, scheduled for June 23 at 7:45PM ET: This market will resolve to "Arizona Diamondbacks" if the Arizona Diamondbacks win the game. This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.
In the upcoming MLB game between the Arizona Diamondbacks and St. Louis Cardinals, scheduled for June 23 at 7:45PM ET: This market will resolve to "Arizona Diamondbacks" if the Arizona Diamondbacks win the game. This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.
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 beliefs from traders risking real capital with no built-in spread. This market's odds may lead or lag sportsbook lines depending on information flow and trader conviction. Comparing the two can reveal where the broader market sees edge or where one venue has priced in recent developments the other has not yet fully reflected.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker or order-book system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each outcome reflects the cumulative belief of all active traders at that moment. Higher prices indicate stronger conviction that an outcome will occur, while lower prices suggest skepticism. As new information emerges—injuries, weather, recent form—traders adjust their positions, moving prices in real time to reflect updated expectations.
This market resolves around Jun 30, 2026, once the game concludes and the result is verifiable from credible public reporting. The outcome is determined by the final score and official result of the matchup. Until that point, prices will fluctuate as traders incorporate breaking news, lineup changes, and other game-day factors. Resolution is automatic once the event is confirmed, settling all positions based on the verified outcome.
Key catalysts include injury announcements affecting star players, bullpen availability, recent team performance streaks, and head-to-head historical matchups. Weather conditions and ballpark factors can also shift expectations, particularly for teams with distinct home-field advantages. Lineup changes, trade-deadline moves, or unexpected roster updates may reshape trader conviction. Media reports, expert commentary, and betting-market activity on sportsbooks can trigger repricing as new information reaches traders. Close to game time, final confirmation of starting pitchers and active rosters typically drives final adjustments.