NBA (National Basketball Association)
The NBA, the gold standard for basketball leagues around the world, has been in existence since 1946 and comprises 30 teams who, for the most part, call the U.S. home (the Toronto Raptors do reside in Canada). Its most famous players are global icons: Lebron James, Stephen Curry, Kevin Durant. The league is universally regarded as having the highest level of play among all of the competitive basketball leagues in the world, and runs from October through June.