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, 9:49 PM EST
Kalshi
This market tracks whether the Houston Astros and Washington Nationals 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 Houston and Washington go to extra innings in the Houston vs Washington professional baseball game originally scheduled for Jul 8, 2026 at 6:45 PM EDT, then the market resolves to Yes.
Prediction markets like Kalshi aggregate the collective judgment of many independent traders, often revealing probabilities that differ from traditional sportsbook lines. Sportsbooks set odds to balance their book and lock in profit margins, whereas this market reflects real-time supply and demand from participants wagering their own capital. Over time, prediction market prices tend to incorporate breaking news, injury reports, and lineup changes faster than some sportsbooks adjust their lines, making them a useful benchmark for comparing consensus expectations around whether extra innings will occur.
On Kalshi, this market is priced through a continuous order-book mechanism where traders submit bids and asks, and the last executed trade sets the current market price. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price directly reflects the probability that extra innings will happen, with higher prices indicating stronger trader conviction. As new information emerges—such as starting pitcher changes, weather updates, or team roster moves—traders adjust their positions, causing the price to move. This dynamic repricing ensures the market stays responsive to real-world developments leading up to game time.
This market resolves around Jul 9, 2026, once the Houston versus Washington game concludes and the final result is verifiable from credible public sources. The outcome hinges on whether the game extends into extra innings or ends within regulation play. Resolution occurs after the event is officially confirmed, ensuring all traders have access to the same authoritative information before payouts are finalized.
Several factors can shift trader sentiment in this market before resolution. Starting pitcher announcements, bullpen availability, and recent team performance trends influence expectations around game length. Weather conditions—particularly wind speed and temperature—affect how far the ball travels and can impact scoring pace. Injury updates to key position players or relief pitchers may alter offensive or defensive capabilities. Line-up changes, home-field advantage dynamics, and head-to-head historical matchups also drive trading activity as participants reassess the likelihood of the game reaching extra innings.