For Youth, I believe it may be football.
The most popular sports in the us are football baseball and basketball.
I believe Al Michaels is the most popular sports announcer
At US naval Academy the popular sports are: Football, Soccer and water sports
Basketball
American Football
Baseball
Soccer and Skating
baseball and soccer
The top four sports in the US are basketball, football, baseball, and golf.
The two most popular spectator sports in the U.S. in the early 1900's was Baseball and the ever popular Soccer
I the US baseball. In the world soccer/futbol.
The NFL and College Football are really popular sports watched in the USA. Football is the most popular spectator sport in the US.