| Outcome | Probability | Yes Bid | Yes Ask | 24h Change | Volume | |
|---|---|---|---|---|---|---|
| Toronto -2.5 first 5 innings | 0% | 0¢ | 0¢ | — | $0 | Trade → |
| Toronto -1.5 first 5 innings | 0% | 0¢ | 0¢ | — | $0 | Trade → |
| A's -1.5 first 5 innings | 0% | 0¢ | 0¢ | — | $0 | Trade → |
| A's -2.5 first 5 innings | 0% | 0¢ | 0¢ | — | $0 | Trade → |
This market asks how the run differential (spread) between the Oakland A's and the Toronto Blue Jays will stand after the first five innings. It matters to traders who focus on starting pitchers, early-game matchups, and managerial deployment in the opening half of a game.
First-five-innings markets isolate early-game dynamics and often move differently than full-game markets because they emphasize starters and the early bullpen. Team tendencies, such as lineup construction, platoon usage, and how managers deploy openers or pull starters early, shape the run environment through the fifth inning. Ballpark and situational factors (home/away, travel, scheduling) also affect how each club approaches the first five.
Market prices reflect the collective expectation of the run spread after five innings and update as lineup, starter, and weather information arrives. Use the market to trade on news that specifically alters early-game expectations rather than long-term season trends.
The listed close time is TBD; platforms that offer first-five markets commonly close at or just before first pitch. Check the KALSHI event page for the official close time before trading.
Settlement is based on the official MLB score after the completion of the top and bottom of the fifth inning — i.e., the run differential through five full innings. Only runs scored within those innings are used to determine which spread outcome wins.
If five innings are not completed, settlement depends on the platform's rules: some markets are voided or marked no-action, while others wait until the game is resumed and five innings are completed. Consult KALSHI's event rules for how this specific market is handled.
Late pitcher or lineup changes materially affect first-five expectations; an opener, an unexpected starter scratch, or a bullpen day typically causes immediate price movement because they change early-inning matchups and run-scoring likelihood.
No — only runs through the fifth inning matter for settlement. Runs scored after the fifth inning, including extra innings, do not affect the First 5 Innings Spread outcome.