punch	boxers practise with ... balls that are filled with sand or grain.
sparring	a ...partner is a person you practise boxing.
a substitute	a player who sits on the sideline is called ...
team	the normal hill, the large hill and ... events.
striker	a player whose role is to score goals in football is called a ...
lane	in sprint races each runner runs in his own track...
bounce	in basketball a player must ...the ball and run with it.