The Big 5 of professional team sports in the USA are NFL, NBA, NHL, MLB, & MLS. The popularity of these 5 sports has grown every year & advent of cable TV, Pay Per View model means these 5 sports are most watched sports in the USA. These are richest professional team sports in the USA with both men/women leagues. Financially these leagues & its players enjoy massive success through sponsorships, ads and ticket sales.
Popularity of Major League Baseball / MLB
Major League Baseball was started in 1903. The MLB all-star games attract most viewership in the USA where players are selected by fan voting. Babe Ruth, Yogi Berra, Hank Aaron, Alex Rodriguez, Joe Dimaggio are most popular players. New York Mets, Cincinnati Reds, Pittsburgh Pirates, Boston Red Sox, & New York Yankees are popular MLB teams.
Popularity of National Basketball Association / NBA
National Basketball Association was established in 1946. All-star games are the biggest attraction each year, where players are selected by fan voting. Kareem Abdul Jabbar, Magic Johnson, Michael Jordan, Kobe Bryant, Larry Bird are most popular league players. Boston Celtics, New York Knicks, Philadelphia 76ers, Chicago Bulls, Los Angeles Lakers, Dallas Mavericks are popular NBA teams.
Popularity of National Football League / NFL
National Football League was founded in 1920 as a version of rugby where players participate wearing protective gear to avoid injuries. NFL Super Bowl is most watched annual event on TV. Tom Brady, Reggie White, Don Hutson, Joe Montana, Aaron Rogers, Tony Romo, Calvin Johnson are most popular league players. Miami Dolphins, New England Patriots, Dallas Cowboys, San Francisco 49ers, are popular NFL teams.
Popularity of National Hockey League / NHL
National Hockey League is hockey on ice; one of the fastest sport in the world. NHL all-stars game is most eagarly watch in the USA. Bobby Hull, Rick Martin, Bill Cowley, Michel Goulet, Alexander Ovechkin are most popular league players. New York Rangers, Philadelphia Flyers, Edmonton Oilers, Los Angeles Kings are popular NHL teams.
Popularity of Major League Soccer / MLS
Major League Soccer (MLS) started in 1994 is nothing but football. MLS All stars are the most popular match watched by people. David Beckham, Landon Donovan, Didier Drogba, Kaka, David Villa are most popular league players. New York City FC, New York Red Bulls, Colorado Rapids, Houston Dynamo, LA Galaxy, Sporting Kansas City are popular MLS teams.
City wise rivalry is what defines these professional team sports in the USA. These leagues have no relegation/promotion policy & the teams play with each other throughout the year.