Titles counted include:
Baseball: 1857-2015 (World Series and pennants in non-World Series years);
Hockey: 1893-2016 (Stanley Cup);
Soccer: 1955-2015 (Intercontinental Cup, Small World Cup, & Club World Cup).
Includes current & defunct major leagues. Defunct leagues include Negro National League, National Association of Base Ball Players, American Basketball Association, National Basketball League, & American Football League, among others.