Almost all the world plays (English) football. No matter where I have gone, football seems to be the unifying language. Roughly a third of the world also plays cricket, and rugby has far surpassed its humble origins in the English Midlands into a truly global sport played across all hemisphere's.
American sports on the other hand are not so well known outside their home country. Baseball is limited to the American continent, surrounding islands and parts of Pacific Asia (i.e. Japan and Korea), ice hockey is limited to the North American continent and parts of northern Europe, American football seems to be just the States. In fact, its only basketball that has a somewhat global following, so unsurprisingly its only basketball that I had any familiarity with.
However, wanting to immerse myself in American culture, and being a keen sportsman myself, I thought watching as many American sports as I could was a way of better understanding the American psyche and its people.
British Sikh, born in the Midlands, based in London, travelling the world seeing new cultures.