It is played with solid paddles and a hollow plastic ball perforated with holes, which moves more slowly than a tennis ball and makes it easier for beginners to maintain rallies. A regulation court measures 20 feet wide and 44 feet long, the same dimensions as a badminton doubles court and considerably smaller than a tennis court. The net is slightly lower than a tennis net, standing 36 inches high at the sidelines and 34 inches at the center. The first permanent pickleball court was built in 1967, and the first known tournament was held in Washington state in 1976. Matches include men's doubles, women's doubles and mixed doubles, followed in some cases by a singles tiebreak format known as the DreamBreaker.