What is measured
Google Analytics 4 records which pages are viewed, how visitors arrived (for example a search engine or a link), and broad device and location information such as country and browser. It sets first-party cookies to tell a returning visit from a new one. Google Analytics does not store full IP addresses.
Advertising features are off: no Google Signals, no ad personalization, and no data shared for ads.
Visitors in the EEA, the UK and Switzerland
If your browser is set to a European time zone, Google Analytics does not load until you choose Accept in the banner. If you choose Decline, it stays off and the choice is remembered in your browser. Independently of the banner, analytics cookies are off by default for visitors Google locates in those countries.
Opting out
To change a choice you made in the banner, clear this site’s data in your browser and reload. You can also block Google Analytics everywhere with Google’s opt-out browser add-on or a content blocker.
Downloads and links
Research files are served directly from this site. Links to other sites, such as FanGraphs, Baseball Savant and GitHub, are governed by those sites’ own policies.
Questions
Open an issue in the project’s GitHub repository, or see the About page.
Last updated October 24, 2026.