Yuya Yamamoto was born in Takasu, Onomichi in Hiroshima, Japan on July 15, 1984.
In 2004, Yamamoto challenged Yamauchi's welterweight championship on January 4, but he was defeated by the unanimous decision at 5R.
Yamamoto lost to Xu Yan by TKO at Krush.16 in Tokyo, Japan on February 17, 2012.
He then lost a split decision after taking Abdellah Ezbiri into an extension round in the semis.
[8] He snapped the losing skid with a split decision win over Onder Ural at Krush 31.
[9] This victory was followed up by a three fight losing streak, during which he lost by decision to Makihira Keita, Kerrith Bhella[10][11] and by knockout to Kotetsu.