Actually, you are wrong on this. They are completely different. Tennis is played 2v2, Volleyball 6v6. Tennis is done with sticks, volleyball with bare hands. Tennis only has basic positions, volleyball has multiple, such as Spiker/Hitter, Setter, Libero (in my opinion the best), Left wing spiker, right wing spiker, middle blocker and I believe even more. Tennis depends on the person's individual strenght, while in volleyball you have a whole team. Volleyball is with a big ball, while Tennis is with a small one. So, changed your mind?