TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 18, 10:29 PM EST
Kalshi
The event will occur if the A's vs Kansas City game on August 18, 2026, cannot be decided within the usual nine innings. Extra innings are triggered by a tie score at the end of the ninth inning, prolonging the game.
If A's and Kansas City go to extra innings in the A's vs Kansas City professional baseball game originally scheduled for Aug 18, 2026 at 7:40 PM EDT, then the market resolves to Yes.
On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Kalshi, traders manually set prices through buying and selling contracts, which determines the current implied probability. The market’s price fluctuates based on new information such as player injuries, weather updates, or recent performance, with volume of $871 indicating recent trading activity. This decentralized pricing model lets participants bet directly on their outlook for the game extending beyond regulation time.
This market resolves around Aug 19, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by whether the game lasts longer than the standard nine innings, as recorded by official league sources.
Key signals that could shift this market include last-minute lineup changes, weather delays, or injuries to key pitchers. Any update affecting the expected game length — such as a starter exiting early or a rain delay — may cause rapid price adjustments as traders reassess the likelihood of extra innings.