Pickleball is a racket or paddle sport in which two players (singles) or four players (doubles) use a smooth-faced paddle to hit a perforated, hollow plastic ball over a 34-inch-high (0.86 m) net until one side is unable to return the ball or commits a rule infraction. Pickleball is played indoors and outdoors. It was invented in 1965 as a children's backyard game in the United States, on Bainbridge Island in Washington state. In 2022, pickleball was named the official state sport of Washington.