From Wikipedia:
“Pickleball is a paddle sport (similar to a racquet sport) that combines elements of badminton, tennis, and table tennis. Two or four players use solid paddles made of wood or composite materials to hit a perforated polymer ball, similar to a Wiffle Ball, over a net. The sport shares features of other racquet sports, the dimensions and layout of a badminton court, and a net and rules somewhat similar to tennis, with several modifications. Pickleball was invented in the mid 1960s as a children’s backyard game.”