OSAKA - Japan's Katsunari Takayama overwhelmed Philippine challenger Virgilio Silvano with a unanimous decision for him to retain his International Boxing Federation minimumweight title. There was no knockdown in the 12-round title bout with judges scoring 118-110, 120-108 and 118-110 in favour of the Japanese who was fighting at home for the first time in more than four years. Takayama wrested the title from Mexico's Mario Rodriguez following the unanimous decision in the Mexican city of Guasave in March. He gave up his Japanese professional boxing licence in late 2009 to concentrate on fighting abroad, but regained the licence in July after winning the IBF crown. With quicker footwork, Takayama remained the aggressor from the first round when he staggered Silvano with a right hook.–AFP