Date of Birth: 
Place of Birth: Hakodate, Hokkaidō Prefecture, Japan
About Keiji Yamaguchi
- Keiji Yamaguchi (???? Yamaguchi Keiji, born February 17, 1974) is a former professional boxer from Hokkaido, Japan.
- Yamaguchi held the WBA light flyweight championship of the world, defeating Panamanian champion Carlos Murillo in 1996 via a 12th-round split decision.He is nicknamed "Prince" because his idol is Naseem Hamed, a superstar British boxer of Yemeni descent in featherweight class.
- So he imitated Hamed's fighting style, including trunk design as well.
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