TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 26, 3:19 PM EST
Kalshi
An upcoming professional baseball game features two teams competing in a match scheduled for a specific date and time. The game will proceed under standard regulations, with the potential for additional periods if needed to determine a winner. The focus is on whether the game will extend beyond the initial scheduled duration.
If at least 1 extra inning is played in the Tampa Bay vs Detroit professional baseball game originally scheduled for Aug 26, 2026 at 1:10 PM EDT, then the market resolves to Yes.
On sportsbooks, odds for the extra innings market often reflect historical averages and sharp handicapper models, while prediction markets price in real-time trader sentiment and volume dynamics. This creates subtle differences — for example, a sportsbook might favor a team’s recent form, whereas traders on Kalshi could weigh broader factors like weather forecasts or starting pitcher health. The gap between the two can widen if news emerges that impacts pitcher availability or stadium conditions before Aug 26, 2026. Monitoring both sides helps spot potential value shifts.
On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Kalshi, this market uses a continuous order book where traders submit bids and asks to set the probability curve. The current top chance reflects the best available bid-ask spread, adjusted for liquidity and recent trading volume of $2,224. As the game date approaches, sharp updates — such as bullpen changes or weather warnings — can cause rapid re-pricing. The market remains open until minutes before first pitch, allowing traders to react to late-breaking news.
This market resolves around Aug 26, 2026, with the outcome confirmed once the game’s official result is verifiable from credible public reporting. The binary answer — yes or no for extra innings — is determined by the confirmed game duration, regardless of any delays or controversies that might occur during play.
Key catalysts include injury reports for starting pitchers, last-minute lineup changes, and weather outlooks for the game’s location. A storm threat could boost chances of extra innings by raising the likelihood of a rain delay and resumption. Conversely, an early announcement of a strong bullpen for either team may suppress the probability. Traders will also watch pre-game betting trends and any commentary from coaches about strategies for late-game situations. Volume spikes often follow these updates.