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 28, 4:19 AM EST
Kalshi
This event group covers a single NPB (Nippon Professional Baseball) matchup between the Hiroshima Carp and Hanshin Tigers scheduled for June 28, 2026 at 1:00 AM EDT. Markets on both Kalshi and Polymarket are pricing the outcome of this game, with different resolution mechanics.
In the upcoming NPB game, scheduled for June 28 at 1:00AM ET: If the Hiroshima Carp win, the market will resolve to "Hiroshima Carp". If the Hanshin Tigers win, the market will resolve to "Hanshin Tigers". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50.
The markets resolve based on the outcome of the Hanshin Tigers vs Hiroshima Toyo Carp Japan NPB game originally scheduled for June 28, 2026 at 1:00 AM EDT. If the game is postponed or delayed, markets remain open and close after the rescheduled game concludes within two days. Should the game be cancelled or rescheduled beyond two days, markets resolve to a fair price per standard rules. In the event of a tie, all markets resolve to 50/50.
Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform attracts different trader demographics, liquidity pools, and regulatory frameworks. Kalshi operates under CFTC oversight with specific contract rules, while Polymarket serves a global audience with different settlement mechanics. Timing delays in information flow, varying levels of market depth, and distinct fee structures can cause temporary price gaps. These divergences typically narrow as arbitrageurs exploit mispricings, but they persist when liquidity is thin or when traders on one platform have superior information access.
Key catalysts include roster announcements, injury reports, weather forecasts, and recent team performance trends. Lineup changes or the absence of star players can shift win probability significantly. Public betting patterns and sharp money movement on external sportsbooks often precede prediction market repricing. Breaking news about player health, coaching decisions, or venue conditions in the hours before game time typically triggers the largest price swings. Monitoring both platforms for volume spikes helps identify when new information is being priced in.