The document discusses several sports that use balls, including tennis, basketball, polo, football, and rugby. Tennis is played with a tennis ball on a court with a net, using rackets. Basketball is played with a basketball on a court with hoops, using hands. Polo is played on horseback with mallets and a wooden ball called a polo ball. Football is played with a ball kicked or headed between goals on a grass field. Rugby also uses a ball but it can be passed or carried by hand and players tackle opponents instead of using their hands.