Racquetball is a fast, exciting game in which the players hit a ball with a short racket (or racquet) that resembles a small tennis racket. They play with a hollow rubber ball about the size of a tennis ball. Most racquetball games are played on indoor courts that are 20 feet (6.1 meters) high, 40 feet (12.2 meters) long, and 20 feet wide. The game can be played with one or two players on a side. In cutthroat racquetball, three players compete against one another.