Template:Infobox MLB/doc

Usage
Only major league affiliations should be listed; National Association, Western League and other minor league affiliations should not be included. The "Established" date indicates when major league status was gained. Postseasons prior to 1903 are not included as they were regarded more as exhibitions.

The infobox may be added by pasting the template as shown below into an article, typically at the top of an article above the lead section.