By Joe Koizumi
Photos: Sumio Yamada

Unbeaten WBO junior flyweight champ Kosei Tanaka (9-0, 5 KOs), 107.75, Japan, impressively kept his belt as he dropped previously unblemished KO artist, mandatory challenger Angel Acosta (16-1, 16 KOs), 108, Puerto Rico, in the fifth session, controlled the action with better precision and pounded out a unanimous decision (117-110 twice, 116-111) over twelve hard-fought rounds on Saturday in Nagoya, Japan.

It’s a very hot non-stop punching fight by the hard-hitting youngsters. (More to come)

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