What were the sports in 1950s?

I think you can answer that yourself, by asking "what new sports are there that have been invented since the 1950's. All the ones that were popular in the 50's are still popular. Baseball, Football, and Basketball were the big three. In America of course, Soccer has never been particularly popular, but has enjoyed a bit of success too. Nascar started in roughly, 1950, and has enjoyed a lot of success since. Other than that, I don't know what to tell you.