USA Baseball has been the national governing body for amateur baseball. It represents the sport in the United States as a member of the U.S. Olympic & Paralympic Committee (USOPC) and internationally as a member federation of the World Baseball Softball Confederation (WBSC). Nearly every major national amateur baseball organization in America is united as a USA Baseball national member organization.
Major League Baseball is a professional baseball organization and the oldest major professional sports league in the world. As of 2021, a total of 30 teams play in Major League Baseball—15 teams in the National League and 15 in the American League