MLB Extra Innings is a sports series on Kalshi, with markets like “Will there be extra innings in the Los Angeles D vs San Francisco game originally scheduled for Sep 25, 2026 at 10:15 PM EDT?”. The Kalshi Eye archive lists 94 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (32 MB), with every order book change and trade.

Venue: Kalshi, series KXMLBEXTRAS
Category: Sports
Markets: 94 (92 settled, 2 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 32 MB, 4,551,849 rows
Datasets: Order book (L2, incremental), Order book snapshots (top 10, 1 second), Top of book (every change), Top of book (1-minute bars), Trades

Open MLB Extra Innings in Markets to see every day and market, then export the days you need. Free sample files of each dataset are on the Kalshi data page.

Reading the files

Every KXMLBEXTRAS trade on October 24, 2026, in DuckDB:

SELECT ts_recv, ticker, yes_price, size, taker_side
FROM 'kalshieye-data/trades/date=2026-10-24/series=KXMLBEXTRAS/trades-KXMLBEXTRAS-2026-10-24.parquet'
ORDER BY ts_recv;

To test a strategy on this series, see How to backtest Kalshi markets.

Related Kalshi series

MLB Player Next Team (KXNEXTTEAMMLB): 310 markets, 13 days of files
First 5 Innings Total (KXMLBF5TOTAL): 171 markets, 13 days of files
First 5 Innings Spread (KXMLBF5SPREAD): 132 markets, 13 days of files
First 3 Innings Winner (KXMLBF3): 119 markets, 13 days of files
First 5 Innings Winner (KXMLBF5): 119 markets, 13 days of files
First 7 Innings Winner (KXMLBF7): 119 markets, 13 days of files

Figures through October 24, 2026. All Kalshi series with pages are listed on Kalshi series.