Kazumi Kokubo

 小久保一美

1994

Asian Amateur Championships - IFBB, FlyWeight, 7th

1997

Japan Nationals - JBBF, LightWeight, 3rd

1998

Japan Nationals - JBBF, LightWeight, 3rd

2001

Japan Nationals - JBBF, BantamWeight, 3rd

2002

Japan Nationals - JBBF, BantamWeight, 3rd

2004

Japan Nationals - JBBF, LightWeight, 2nd

2006

Mr Japan - JBBF, Masters 40+ LightWeight, 3rd
Japan Nationals - JBBF, FlyWeight, 1st

2007

Asian Amateur Championships - IFBB, FlyWeight, 4th
East Asian Amateur Championships - IFBB, FlyWeight, 1st
Japan Nationals - JBBF, FlyWeight, 1st

2008

Japan Nationals - JBBF, FlyWeight, 1st

2009

Asian Amateur Championships - IFBB, FlyWeight, 3rd
Japan Nationals - JBBF, FlyWeight, 1st

2010

Japan Nationals - JBBF, BantamWeight, 2nd

2011

Mr Japan - JBBF, Masters 40+ LightWeight, 3rd
Japan Nationals - JBBF, BantamWeight, 1st

2012

Asian Amateur Championships - IFBB, BantamWeight, 9th
Asian Amateur Championships - IFBB, Masters 50+, 2nd
Japan Nationals - JBBF, BantamWeight, 3rd