   racquetball is a racquet sport played with a hollow rubber ball in an indoor or outdoor court. joseph sobek  is credited with inventing the modern sport of racquetball in 1950 (the outdoor, one-wall game goes back to at least 1910 in n.y.c.), adding a stringed racquet to paddleball in order to increase velocity and control. unlike most racquet sports, such as tennis and badminton, there is no net to hit the ball over, and, unlike squash, no tin (out of bounds area at the bottom of front wall) to hit the ball above. also, the court's walls, floor, and ceiling are legal playing surfaces, with the exception of court-specific designated hinders being out-of-bounds.usra rulebook racquetball is very similar to 40Ã20 handball, which is played in many countries. it is also very similar to the british sport racketball (see below for a comparison). joe sobek is credited with inventing the sport of racquetball in the new britain connecticut ymca, though not with naming it. a professional tennis and handball player, sobek sought a fast-paced sport that was easy to learn and play. he designed the first strung paddle, devised a set of rules, based on those of squash, handball, and paddleball, and named his game paddle rackets. in february 1952 sobek founded the national paddle rackets association (npra), codified the rules, and had them printed as a booklet. the new sport was rapidly adopted and became popular through sobek's continual promotion of it; he was aided by the existence of some 40,000 handball courts in the country's ymcas and jewish community centers, wherein racquetball could be played. in 1969, aided by [[robert w
Racquetball Sports_originating_in_the_United_States