an indoor game in which two or four players hit a small ball against the four walls of the court squash. Game similar to handball but played with racquets. The game is played on a four-walled court with a short-handled racket and a ball larger than that used in handball. It was invented in 1950 by Joseph G. Sobek (1918-98), who was unhappy with the indoor racquet sports then available. By the late 1990s there were 8.5 million racquetball players in 91 countries