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: May 30, 1:30 AM EST
Kalshi
This market tracks whether the Arizona Diamondbacks and Seattle Mariners game scheduled for May 29, 2026 at 10:10 PM EDT will extend into extra innings. On Kalshi, the probability of extra innings occurring stands at 6.5%. Resolution is determined by the official outcome of the game as played on May 29, 2026, with the market settling based on whether regulation play concludes with a winner or the teams proceed to extra innings.
Prediction market odds on Kalshi reflect real-time trader consensus on extra-innings probability, while traditional sportsbooks set odds based on algorithmic models and risk management. Prediction markets often incorporate late-breaking information faster than sportsbooks adjust their lines. For the Arizona vs Seattle game, comparing Kalshi odds to major sportsbook offerings can reveal whether professional bettors and casual traders are pricing the extra-innings scenario differently. Sportsbooks typically adjust odds to balance action, whereas prediction markets move purely on supply and demand.
The Arizona vs Seattle: Extra Innings market resolves on May 30, 2026. Resolution is determined by whether the game goes to extra innings or concludes in regulation play. The outcome is settled based on the official final score and game length as recorded by Major League Baseball. Traders should monitor the game live and any official MLB communications regarding postponements or rescheduling, as these could affect resolution timing and criteria.
Several factors could shift the extra-innings probability before the May 29 game. Starting pitcher announcements and bullpen depth reports for both Arizona and Seattle will influence trader expectations of game length. Weather conditions at game time, particularly wind speed and temperature, affect home-run likelihood and scoring pace. Late-breaking injuries to key position players or relief pitchers could alter offensive or defensive balance. Pregame betting action and line movement at sportsbooks may also signal sharp money positioning. Real-time game developments like early scoring runs will drive final price adjustments as tipoff approaches.