Japanese boxing brothers Yudai and Ginjiro Shigeoka both won by knockout in a world minimumweight interim title doubleheader on Sunday.Ginjiro, the younger of the two, became IBF interim champ with a ninth-round knockout of the Philippines' Rene Mark Cuarto at Tokyo's Yoyogi 2nd Gymnasium before his older brother knocked out Puerto Rico's Wilfredo Mendez for the interim WBC title.Ginjiro is the IBF's fourth-ranked contender and hit the canvas in the first round, but recovered to knock the third-ranked Cuarto down in the seventh and twice more in the ninth.He said he was relieved to have got…READ FULL ARTICLE