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: Jun 21, 4:24 PM EST
Kalshi
A professional baseball matchup between the Cleveland Guardians and Houston Astros scheduled for June 21, 2026. The outcome will be determined by which team wins the game played at the scheduled time.
This event covers the Cleveland vs Houston professional baseball game originally scheduled for June 21, 2026 at 2:10 PM EDT. Resolution depends on the final outcome of the completed game. If the game is postponed or delayed, the market remains open and closes after the rescheduled game concludes, provided the reschedule occurs within two days of the original date. Should the game be cancelled entirely or rescheduled more than two days beyond the original date, the market resolves to a fair price determined in accordance with established rules.
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 like this one are driven purely by trader belief and capital allocation. Prediction markets typically incorporate a broader range of information and real-time updates, sometimes moving faster than traditional sportsbooks. Comparing this market's odds to major sportsbook lines can reveal where the crowd sees value or where consensus differs, though both sources ultimately reflect uncertainty about the same underlying event.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares representing different outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each outcome reflects the marginal cost of the last executed trade, meaning the odds update instantly as new orders flow in. Traders profit by correctly predicting the result, creating a financial incentive for accurate pricing. This mechanism ensures that the market price incorporates available information and trader conviction in real time, making it a dynamic gauge of collective expectations.
This market resolves around Jun 21, 2026, once the event concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the final, official result of the matchup. Until that point, traders can continue to buy and sell shares as new developments and information emerge. Resolution is automatic once the event is complete and the winner is established, at which point all positions settle according to the actual outcome.
Key catalysts that could shift this market include team roster changes, injury announcements, recent performance trends, and head-to-head matchup history. Public statements from coaches or players, betting line movements at major sportsbooks, and expert analysis can also influence trader sentiment. Weather conditions or venue factors specific to the matchup may matter depending on the sport. As the event date approaches, any breaking news—trades, suspensions, or tactical adjustments—could trigger repricing. Real-time updates and social media discussion often accelerate price movement, so active traders monitor multiple information sources leading up to resolution.