 For professional players in the NBA or foreign leagues, the league provides an opportunity to practice during the off season.The games, which are Monday-Thursday and run from mid-June to mid-August, are free to the public and take place at the Kezar Pavilion in San Francisco.The league began in 1979 and has been in existence since then, acting as a place not only for players to stay active, but for fans of the game to see some professional caliber play for no cost.