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 4, 9:44 PM EST
Kalshi
Boston and Baltimore will play a professional baseball game on September 4, 2026. If neither team holds a lead after the prescribed nine innings, the game will extend into extra innings until a decisive result is achieved.
If at least 1 extra inning is played in the Boston vs Baltimore professional baseball game originally scheduled for Sep 4, 2026 at 7:05 PM EDT, then the market resolves to Yes.
Typically, prediction market odds reflect the wisdom of the crowd, often differing from initial sportsbook lines. Sportsbooks set odds based on their own models and aim to balance action on both sides, incorporating a profit margin. This market, however, is driven by individuals trading based on their own information and analysis. As more information becomes available – such as pitching matchups or weather forecasts – the odds on Kalshi may converge or diverge from sportsbook odds, potentially offering value to informed traders who identify discrepancies.
On Kalshi, this market is priced through a continuous order book where traders buy and sell contracts representing the probability of the event occurring. The price of a contract ranges from 0 to 100, representing a percentage chance. As more people buy contracts, the price increases, indicating a higher perceived probability. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market price reflects the collective assessment of all traders participating on Kalshi, creating a dynamic and real-time forecast of the outcome. This differs from traditional betting where odds are set by a single entity.
This market resolves around Sep 5, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the market will resolve based on whether the Boston Red Sox and Baltimore Orioles game goes into extra innings. The official game results, as reported by a major sports data provider, will determine the final outcome. Traders will be able to see the resolution details on Kalshi once the outcome is officially verified, and any outstanding contracts will be settled accordingly.
Several factors could significantly influence this market. Any news regarding potential pitching changes for either the Red Sox or the Orioles, particularly if a key starter is ruled out, could shift the odds. Weather forecasts also play a role; conditions favorable to hitting could increase the likelihood of a higher-scoring game and potentially extra innings. Additionally, any late-breaking injury reports or lineup changes could impact trader sentiment and cause movement in the market. Monitoring these signals on Kalshi can help traders assess potential opportunities.