1930s sports

If you are talking about sports in the United States
during this time, sports was a very big deal in those days, just as it is today. 
However, the hierarchy of what sports were big deals back then was a bit different than
it is today.

First of all, baseball still ruled the US
sports scene.  You have to remember that in these days, baseball was segregated so there
were the white leagues (what we now call the Major Leagues) and there was the Negro
League.)

Second, college football was much, much bigger
than the NFL during those days.  The NFL did exist, but college football was way more
popular.

Third, basketball was really not very popular as a
spectator sport in those days.  The NCAA tournament, which is such a big thing now, was
not even created until 1939.  The NBA did not exist yet
either.

Finally, boxing was a much bigger deal in those
days, as was horse racing.