Description:
Today, MLB is composed of 30 teams: 29 in the United States and one in Canada. Teams play 162 games each season and five teams in each league advance to a four-round postseason tournament that culminates in the World Series, a best-of-seven championship series between the two league champions that dates to 1903. Baseball broadcasts are aired on television, radio, and the Internet throughout North America and in several other countries throughout the world. MLB has the highest season attendance of any sports league in the world with more than 73 million spectators in 2015.
Source: https://en.wikipedia.org/wiki/Major_League_Baseball