Koshigaya Alphas
 | This article needs more citations. (October 2017) |
| Koshigaya Alphas | |||
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| Conference | East | ||
| Division | First | ||
| Leagues | B.League | ||
| Founded | 1997 | ||
| History | Otsuka Corporation Alphas (1997–2018) Otsuka Corporation Koshigaya Alphas (2018–2019) Koshigaya Alphas (2019–present) | ||
| Arena | Koshigaya Municipal General Gymnasium | ||
| Capacity | 4,472 | ||
| Location | Koshigaya, Saitama | ||
| General manager | Kazuto Aono | ||
| Head coach | Ryuzo Anzai | ||
| Website | www | ||
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The Koshigaya Alphas (越谷アルファーズ, Koshigaya Arufāzu) are a Japanese professional basketball team based in Koshigaya. The team most recently competed in the first division of the B.League. Starting from the 2026–27 season, the team will compete in the B.League One, the league's second division, as a member of the Northern Conference.
Coaches
- Yoshinori Kaneta
- Kenji Okamura
- Kazuto Aono (2013–20)
- Junpei Takahara (2020–21)
- Sho Higashijima (2021–23)
- Ryuzo Anzai (2023–)
Current roster
| Koshigaya Alphas roster | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Updated: 8 April 2026 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Notable players
