The Dutch Basketball League (DBL), formerly the Eredivisie, is the highest professional basketball league in the Netherlands. The league has a closed system. To participate a team has to have enough money and potential. The league began in 1960 as the Eredivisie and was organized by the NBB and later the FEB. In 1977 the league introduced the play-offs. At the moment the Dutch Basketball League consist of eight teams and is played under the FIBA rules.