TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 21, 1:54 PM EST
Kalshi
This market tracks whether either San Francisco or Miami scores at least one run during the first inning of their Major League Baseball game on June 21, 2026. The outcome depends solely on the scoring activity in that opening inning.
If either team scores a run in the first inning of the San Francisco vs Miami professional baseball game originally scheduled for Jun 21, 2026 at 1:40 PM EDT, then the market resolves to Yes.
Prediction market odds and sportsbook odds often diverge because they reflect different trader bases and incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets like this one aggregate beliefs from traders risking real capital on outcomes. This market may price first-inning scoring differently than traditional sportsbooks, especially as new information surfaces closer to game time. Comparing the two can reveal where one venue sees value the other has missed.
On Kalshi, this market is priced through an order-book mechanism where traders buy and sell 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 collective probability assigned by active traders; higher prices indicate stronger belief in that outcome. As new information arrives—injury reports, weather updates, or lineup changes—traders adjust their positions, moving the price to equilibrate supply and demand in real time.
This market resolves around Jun 21, 2026, once the San Francisco versus Miami game concludes and the first-inning result is verified. The outcome is determined by whether either team scores at least one run during the opening inning, confirmed against credible public sources such as official league records or major sports data providers. Resolution occurs shortly after the inning closes and the result is publicly available.
Several catalysts can shift odds before the game begins: starting pitcher announcements, lineup changes, weather forecasts affecting ball carry and visibility, and injury updates to key batters or pitchers. Bullpen availability and recent offensive trends for each team also influence first-inning scoring probability. As game time nears, any late-breaking news—such as a surprise roster move or weather deterioration—can trigger sharp repricing. Trading volume typically spikes in the final hours before first pitch.