TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 17, 12:49 AM EST
Kalshi
In the Seattle vs Los Angeles A game set for September 16, 2026, observers will note if the contest remains tied through the ninth inning, forcing the teams into extra innings. Such extensions involve playing additional frames until one team secures a lead that cannot be overcome by the opponent in their subsequent at-bat.
If at least 1 extra inning is played in the Seattle vs Los Angeles A professional baseball game originally scheduled for Sep 16, 2026 at 9:38 PM EDT, then the market resolves to Yes.
Often, prediction market odds reflect the wisdom of the crowd, which can differ from initial sportsbook lines. Sportsbooks set their odds based on models and expert analysis, while this market incorporates the opinions of many individual traders. It’s common to see discrepancies, especially as new information emerges or public sentiment shifts. If a significant number of traders believe the sportsbook is undervaluing or overvaluing the chance of extra innings, the odds on Kalshi will adjust accordingly, potentially offering a different value than traditional sports betting options. This dynamic can reveal where the crowd disagrees with the experts.
On Kalshi, this market is priced using a continuous double auction. Traders buy and sell contracts representing the probability of extra innings occurring, and the price of these contracts reflects the collective assessment of all participants. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price moves based on supply and demand; if more people buy contracts, the price increases, indicating a higher perceived probability. Conversely, if more people sell, the price decreases. This creates a dynamic pricing mechanism where the market constantly adjusts to new information and trader sentiment, offering a unique perspective on the game's potential outcome.
This market resolves around Sep 17, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the resolution will be determined by whether the Seattle versus Los Angeles game officially goes into extra innings according to official MLB game records. The final result will be based on the official game statistics, ensuring a transparent and verifiable outcome. Traders will be able to see the confirmed result on Kalshi following the conclusion of the game and official reporting.
Several factors could influence the price of this market. Any news regarding potential starting pitchers, weather forecasts impacting game conditions, or late-breaking injury reports could all cause shifts in trader sentiment. A strong pitching matchup might decrease the perceived likelihood of a high-scoring game and, therefore, extra innings. Conversely, favorable hitting conditions or a history of high-scoring games between these teams could increase the probability. Even public perception, driven by social media or expert analysis, can play a role in how this market moves before Sep 17, 2026.