Wikipedia
Chaza
The Chaza, pelota nacional, or national ball, is a Colombian racquet sport, (like tennis), which is practiced on a rectangular area bounded by lines and divided by a line drawn on the floor that divides the playing field. It is played between two teams of 4 players each. The object of the game is to launch a ball (called "bombo") by hand or racquet so that it bounces into the opponent's field without being returned.
It is a very old sport created in the fifteenth century BCE. Presently the sport is widely practiced in the department of Nariño, Colombia, and is the national sport of Ecuador