We put 3 players to defend each one in one of the circles of the field: the two zones and the central circle. These players cannot leave there. 

Two players start from the baseline and...

 Two players with a ball are constantly passing the ball back and forth. A third player has to try to hit the ball with his own ball. 

We try to speed up the pass to avoid contact with the...

 A team of 3, 4 or 5 players with a ball are constantly passing the ball back and forth, without bouncing or dropping the ball. The defending team tries to prevent them from making 10...