*** *** Relevant Background: " Tamburello , named Tambass in Piedmont , is a court game invented in the northern provinces of Italy during the 16th century. [1] It is a modification of the ancient game of pallone col bracciale , bearing the same general relation to it as Squash does to Racquets . [2] Tamburello is also similar in form to tennis . [3] Tamburello and its variations remain popular today in many nations of the world.... Tamburello Indoor is practiced in an enclosed space such as a sports hall or a school gym on a small field and each team has maximum 8 players of which 3 simultaneously in the field. The ball in this case cannot be made of rubber, because too fast, and then using the tennis ball type depressurized. This is the tamburello's form more prevalent among the world: they play at least in 20 nations....." ( https://en.wikipedia.org/wiki/Tamburell...