National Basketball Association. Founded in 1946, this men’s professional basketball league has gone through many mergers to become the league we know today. There are currently 30 teams in North A..

National Football Conference. One of the two NFL conferences, consisting of 16 teams: Dallas Cowboys, New York Giants, Philadelphia Eagles, Washington Redskins, Chicago Bears, Detroit Lions, Green Bay..

National Football League. Founded in 1920, this men’s professional football league encompasses 32 teams.

National Hockey League. Founded in 1917, this professional ice hockey league consists of 31 teams in both the United States and Canada.

Baseball’s National League. One of the two leagues that make up the MLB, consisting of 15 teams: Atlanta Braves, Miami Marlins, New York Mets, Philadelphia Phillies, Washington Nationals, Chicago Cu..