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: Jun 23, 11:14 PM EST
Kalshi
A professional baseball game between two teams is scheduled for June 23, 2026 in the evening. The event in question is whether this matchup will extend beyond regulation play into extra innings.
If Boston and Colorado go to extra innings in the Boston vs Colorado professional baseball game originally scheduled for Jun 23, 2026 at 8:40 PM EDT, then the market resolves to Yes.
Prediction market odds and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and manage risk, while prediction markets aggregate beliefs from traders who have direct financial exposure to accuracy. This market allows you to compare the crowd-sourced probability against traditional sportsbook lines for the same event. Prediction markets frequently outperform sportsbooks at forecasting binary outcomes because traders face real consequences for incorrect predictions, creating stronger incentives for honest price discovery.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares representing yes or no outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The current odds reflect the most recent trade price, and new orders move the price based on supply and demand. Traders holding shares profit if their outcome occurs and lose their stake if it does not, creating direct incentives for accurate pricing. The transparent, real-time price discovery process means the market continuously incorporates new information about player availability, weather, and other factors affecting the likelihood of extra innings.
This market resolves around Jun 24, 2026, once the Boston vs Colorado game concludes and the final result is verifiable from credible public reporting. The outcome is determined by whether the game extends into extra innings or concludes within regulation play. Resolution occurs automatically after the event is confirmed through official sources, and traders' positions settle based on the actual result. Early resolution is possible if the game is cancelled or postponed under circumstances that make extra innings impossible.
Several factors could shift odds in this market before the game begins. Roster changes, such as key player injuries or roster moves by either team, often trigger significant price movement. Weather forecasts—particularly wind speed and temperature—influence the likelihood of home runs and offensive output, which can affect game length. Starting pitcher announcements and bullpen availability also matter, since strong pitching typically shortens games. As game time approaches, late-breaking news about lineup changes or field conditions will likely drive additional trading activity and price adjustments.