sport riddle

1. you play this sport inside
2. it`s mabye dificult
3. It develops the cardio because you run all the time
4. it`s play in a small piece whit four wall
5. the sport is played at the Olympic
6. you can play alone or with a partener
7. you need a clothes comfortable
8. This sport was invented by a student who hit on the wall
9. you play with a raket
10. you need a black ball in rubber