TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 17, 9:59 PM EST
Kalshi
This market tracks whether either the Washington Nationals or Oakland Athletics scores at least one run during the opening inning of their Major League Baseball matchup on July 17, 2026. Early offensive production often sets the tone for the game and can result from strong hitting or defensive miscues.
If either team scores a run in the first inning of the Washington vs A's professional baseball game originally scheduled for Jul 17, 2026 at 9:40 PM EDT, then the market resolves to Yes.
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 aggregate trader beliefs through continuous price discovery. Traders on Kalshi may price in nuanced game conditions, recent team performance, or lineup changes that sportsbooks adjust more slowly. Comparing this market's implied probability to major sportsbook lines can reveal where the crowd sees edge or where consensus has shifted. Both sources offer valuable signals, but they rarely move in lockstep.
On Kalshi, this market is priced through continuous order-book trading, where buyers and sellers set the odds by placing bids and asks. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The current price reflects the last matched trade and the spread between the highest bid and lowest ask. As new information emerges—such as lineup announcements, weather updates, or injury reports—traders adjust their positions, causing the price to move. The market's depth and 24-hour volume indicate how easily traders can enter or exit positions at or near the current level.
This market resolves around Jul 18, 2026, once the opening inning of the Washington versus A's game is complete. The outcome will be confirmed based on whether at least one run crosses the plate during that inning, verified against credible public sources such as official league records or major sports data providers. Traders holding positions will see their contracts settle to either 1 or 0 depending on the verified result. Early resolution is possible if the game is called or postponed under league rules, though standard completion of the first inning is the expected path.
Several catalysts can shift odds before the game begins. Lineup announcements, especially the inclusion or absence of key offensive players, often trigger sharp price moves. Weather conditions—wind speed and direction, temperature, and humidity—affect ball carry and scoring likelihood. Injury reports released close to game time can reshape trader expectations around offensive firepower. Bullpen or pitching changes announced pregame may also influence early-inning scoring probability. Real-time updates during the pregame broadcast, such as field conditions or umpire assignments, can prompt final adjustments as traders refine their positions in the closing minutes before first pitch.