Zorbing?
There is a sport where you get in a ball and roll down a hill its called Zorb ball.
A zorb ball is a giant ball filled with air, in which people roll down a hill. It is a rather new sport. You can compare it to the famous toy for hamsters. It is also similar to the water-equivalent where children can run around on the water, using a rolling ball full of air. A zorb ball however doesn't have any water involved.
Water polo and water volleyball are sports played with a ball in a pool.
hurling
rugby
this is just called 'sport', or by its particular name (athletism, etc..). When a sport involves a ball, it can be called 'un sport de ballon' or 'un sport collectif'
the hammer throw
Figure Skating
The Sport is called Polo.
South Africa
Golf.
well, where I saw it, it got translated to "Giant ball Rasengan"