National Basketball League (Japan)
The National Basketball League (NBL) is a professional basketball league in Japan. It exists alongside the bj league, which is Japan's other basketball competition. There is no system of promotion and relegation between bj-league and the NBL.
In 2012 the Japan Basketball Association announced its intention to establish the National Basketball League as the top-flight professional league in Japan to replace its predecessor, the Japan Basketball League. The first NBL season started in Autumn 2013, with Toshiba defeating Wakayama to take the inaugural title in May 2014. 
Below the NBL is the National Basketball Development League (NBDL), which is the successor to the former JBL 2 division.
Teams authorized to play in the 2014-15 NBL season are:
- Levanga Hokkaido (Hokkaido Prefecture)
- Link Tochigi Brex (Tochigi Prefecture)
- Chiba Jets (Chiba Prefecture)
- Hitachi SunRockers Tokyo (Tokyo, and Kashiwa, Chiba Prefecture)
- Toyota Alvark Tokyo (Tokyo)
- Toshiba Brave Thunders Kanagawa (Kanagawa Prefecture)
- Tsukuba Robots (Ibaraki Prefecture)
- Aisin Seahorses Mikawa (Aichi Prefecture)
- Mitsubishi Diamond Dolphins Nagoya (Aichi Prefecture)
- Wakayama Trians (Wakayama Prefecture) *Announced withdrawal from league on 7 January 2015
- Hiroshima Dragonflies (Hiroshima Prefecture)
- Hyogo Storks (Hyogo Prefecture)
- Kumamoto Volters (Kumamoto Prefecture)
- Official NBL website Invalid language code.