Football is the most popular sport
American football is the most popular spectator sport in the United States. It is a combat game where highly trained athletes skillfully and brutally execute strategic plans. Attending a football game often begins with a "tailgate party" in the parking lot of the stadium followed by several hours of rowdy, emotionally charged excitement. Most fans watch football while gathered in a local bar or at a friend's home in front of a big-screen TV.
The National Football League (NFL) consists of 32 professional teams located in major cities across the USA. Each team plays 16 games between early September and the end of December. The two best teams meet at the Superbowl near the end of January. Games are on Sunday afternoons with a few nationally televised games on Monday nights. It is difficult to get tickets for any NFL games as they are generally "sold out" before the season begins. You can sometimes obtain tickets through travel agents and ticket brokers at premium prices. You can almost always buy tickets, for a high price, from illegal "ticket scalpers" in front of the stadium just before a game.
At hundreds of universities across the USA, they play college football games on Saturday afternoons. Games at the "football schools" with outstanding teams often attract over 100,000 fans. It is difficult to obtain tickets to games at the best football schools but easy to get tickets at the less popular college games.
Baseball has an entirely different atmosphere
Baseball is the second most popular sport in the USA and it has a completely different atmosphere than football. It is a game of intense concentration and the near perfect execution of playing skill. Attending a baseball game might start with a tailgate party that resembles a family picnic followed by several hours of relaxed socializing with friends while watching the game.
There are 30 Major League baseball teams divided into the National League and the American League. Each team plays about 160 games on weekday evenings or weekend afternoons between early spring and late fall. The best team from each league meet in late fall for the World Series games to determine the National Champion. Only the most popular games are sold out, so you can normally buy tickets to most Major League games.
Several hundred minor league baseball teams play in smaller cities across the USA and Canada. Each team is affiliated with one of the Major League teams and used as a training ground for future Major League players. Tickets are almost always available for minor league games.