Date of Birth: 
Place of Birth: Chōfu, Tokyo, Japan
About Keijuro Matsui
- Keijuro Matsui (popularly known as KJ) (born October 16, 1985) is a former guard for the Columbia Lions basketball team at Columbia University.
- He is the first Japanese native basketball player in NCAA Division I history.
- Matsui also played in the 2005 Nike Hoop Summit for the World Select Team, only the second Japanese to do so.
- In the summit he scored seven points in 11 minutes.
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