To play rugby is 'jouer au rugby' in French.
le rugby
"touch rugby"
"Mon sport préféré est le rugby."
Lundi, je suis allé à mon entraînement de rugby.
your dad
That one of the teams have the ball, when they say 'They have possession of the ball' its means they have the ball.
It's the same in French.
Volley-ball
Volley, volley-ball
Un bal
votre une boule