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: Jul 21, 7:54 PM EST
Kalshi
This market tracks whether the San Francisco Giants or Kansas City Royals score at least one run during the opening inning of their Major League Baseball matchup on July 21, 2026. Early offensive production is a common focus in baseball betting, as first-inning scoring can set the tone for the entire game.
If either team scores a run in the first inning of the San Francisco vs Kansas City professional baseball game originally scheduled for Jul 21, 2026 at 7:40 PM EDT, then the market resolves to Yes.
Prediction market odds and traditional sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and protect their margin, while prediction markets aggregate the collective belief of traders betting real money on outcomes. This market aggregates trader conviction about first-inning scoring, which can lead to sharper or earlier price discovery than conventional betting lines. Comparing the two can reveal where informed traders see value relative to the broader betting market.
On Kalshi, this market is priced through a continuous order book where traders buy and sell shares representing each outcome. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Prices range from 0 to 100, with each point representing a 1% implied probability. As new information surfaces—such as injury reports or weather updates—traders adjust their bids and asks, moving the price to reflect the latest consensus. The spread between buy and sell orders tightens as the game approaches and more traders participate.
This market resolves around Jul 22, 2026, once the first inning of the San Francisco versus Kansas City game concludes. The outcome is determined by whether either team scores a run during that inning and is verified against credible public sources covering the game. Resolution is binary: the market settles to reflect the actual result recorded in official game statistics. Traders should monitor the game broadcast or official league reporting to confirm the final inning result.
Several catalysts can shift odds before the game begins: starting pitcher announcements, bullpen availability, recent offensive or defensive performance trends, and weather conditions at game time. Lineup changes or injury updates to key hitters can significantly impact first-inning scoring probability. Historical head-to-head matchups and how each team performs early in games also influence trader positioning. As game time approaches, any late-breaking news about player status or field conditions will likely trigger sharp repricing across the market.