TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 21, 12:44 AM EST
Kalshi
A professional baseball game between two teams is scheduled for July 20, 2026 at 10:10 PM EDT. The event in question is whether this matchup will extend beyond regulation play and go to extra innings.
If St. Louis and Los Angeles A go to extra innings in the St. Louis vs Los Angeles A professional baseball game originally scheduled for Jul 20, 2026 at 10:10 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 aggregate trader beliefs through continuous price discovery. This market may show higher or lower probability than traditional sportsbooks depending on whether informed traders believe the consensus is mispriced. Comparing the two can reveal where smart money disagrees with conventional betting lines, though both respond dynamically to breaking news and game developments.
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 estimate of all active traders. As new information arrives—injuries, weather updates, or betting patterns—traders adjust their positions, moving the price up or down. This continuous repricing ensures the market stays efficient and responsive to real-world developments affecting whether extra innings will occur.
This market resolves around Jul 21, 2026, once the game concludes and the final result is verified against credible public sources. The outcome is determined by whether the game extends into extra innings or concludes within regulation play. Resolution occurs automatically after the event is confirmed, and traders' positions settle based on the actual game result. No further action is required from participants after the game ends.
Several factors can shift this market significantly before game time and during play. Lineup announcements, pitcher changes, and injury reports affecting key players will influence expectations of game length. Weather conditions—wind speed, temperature, and humidity—affect ball carry and scoring pace. Betting action and sharp-money movement on sportsbooks often precede prediction market repricing. During the game itself, score progression, pitching changes, and bullpen availability become critical drivers. Early leads or tight contests can shift probabilities as traders reassess the likelihood of regulation play versus extra innings.