The American League is a professional baseball league which was founded in 1901. It is one of the two major leagues in North America along with the National League. This league comprises 15 teams from different cities in the United States and one from Canada. The AL as it's commonly known, is also referred to as the Junior Circuit, playing many of its games with designated hitters, rather than pitchers hitting as in the NL. Other synonyms for the American League include the AL, the Junior Circuit, and the Major League Baseball American League. If you are a die-hard baseball fan, you will be familiar with all these names.