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: Jul 8, 9:04 PM EST
Kalshi
This market tracks whether the Seattle Mariners and Miami Marlins baseball game scheduled for July 8, 2026 will require extra innings to determine a winner. Extra innings occur when the game is tied after nine regulation innings.
If Seattle and Miami go to extra innings in the Seattle vs Miami professional baseball game originally scheduled for Jul 8, 2026 at 6:40 PM EDT, then the market resolves to Yes.
Prediction market odds and sportsbook odds often diverge because they serve different audiences and operate under different constraints. Sportsbooks set lines to balance action and manage risk, while prediction markets reflect the aggregated beliefs of traders with real money at stake. This market may show a different probability than traditional sports betting sites because traders here are pricing the outcome based on collective analysis rather than bookmaker margins. Comparing the two can reveal where public opinion and professional oddsmakers disagree on the likelihood of extra innings.
On Kalshi, this market is priced through an order-book mechanism where traders submit bids and asks for 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 price of each share reflects the current consensus probability, with higher prices indicating stronger belief that extra innings will occur. As new information emerges—such as lineup announcements, weather updates, or injury reports—traders adjust their positions, moving the price up or down. This continuous repricing ensures the market stays responsive to real-world developments.
This market resolves around Jul 9, 2026, once the Seattle versus Miami game concludes and the final result is verifiable from credible public sources. The outcome hinges on whether the game goes to extra innings or ends in regulation. Resolution occurs after the official box score is confirmed, ensuring accuracy and eliminating ambiguity. Traders should monitor game updates and official league announcements in the days leading up to the deadline to stay informed.
Several catalysts can shift odds in this market before the game begins. Roster changes, such as key player injuries or late roster moves, often trigger sharp repricing. Weather forecasts—particularly wind speed and temperature, which affect ball carry—can influence expectations about game length and scoring pace. Starting pitcher announcements and bullpen availability updates also matter, since deeper benches and fresher arms may reduce the likelihood of extra innings. Breaking news about team strategy or umpire assignments can create trading opportunities for attentive participants.