TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 3, 1:24 AM EST
Kalshi
An extra inning occurs in a professional baseball game when the regulation nine innings end with the score tied, necessitating additional innings to determine a winner. This scenario can extend the game's duration beyond its scheduled time. The occurrence of such an extension in the scheduled match between two teams is the focus of interest.
If at least 1 extra inning is played in the St. Louis vs Los Angeles D professional baseball game originally scheduled for Sep 2, 2026 at 10:10 PM EDT, then the market resolves to Yes.
On Kalshi, the current implied probability for the Extra Innings market reflects trader sentiment more granularly than typical sportsbook lines. Sportsbook odds often incorporate broader factors and broader betting volumes, which can smooth out extreme probabilities. This market’s pricing may shift more rapidly with new pitching changes or weather updates, offering a more responsive indicator of real-time game conditions than sportsbook odds, which are set less frequently and may lag behind live developments.
This market resolves around Sep 3, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result hinges solely on whether the game goes beyond the standard nine innings, as officially recorded after the match concludes.
Injuries to key pitchers, weather delays, or strategic decisions by managers are primary drivers that could shift this market. If a starting pitcher exits early due to injury, the probability of extra innings might rise, pushing the market price higher. Conversely, if a team builds a substantial early lead, the likelihood could fall. Weather conditions that threaten game length or interruptions may also influence trader sentiment, causing rapid adjustments in market odds as new information emerges.