I think many people in the late 20th century thought sports would be Space-agey, like in The Jetsons
, or in some other futuristic, sci-fi works of fiction.
I've said I think tech will evolve to the point that it can be controlled by reading the neural impulses in one's brain. We have tech like that now. We have mind tracking devices like EEG headsets. There's a boardgame called Mindflex.
I could see a sport called "airball" or "hoverball" (whatever you want to call it) being developed that involves a ball or balls being levitated, players being levitated or using some kind of hovering conveyances and mind tracking devices. Basically a sport that expands upon the principle of using mind tracking devices.
There's an interesting article I found about futuristic sports on Bleacherreport.com called "15 Coolest Future Sports". There's another one on Latinpost.com called "Top 5 Futuristic Sporting Events That Are Getting Attention".
There are futuristic, hi-tech sports and sporting events in development.