Junto Nakatani KO1 Vincent Astrolabio... In Tokyo, three-division champion Junto Nakatani retained his WBC bantamweight title with a first-round knockout of Vincent Astrolabio of the Philippines on Saturday.  Nakatani (28-0, 21 KOs) landed a straight left on Astroabio's belt line. Astrolabio stood up late in the count, but immediately dropped back down to one knee, ending the fight. Astrolabio falls to 19-5. Nakatani's win sets up some big fights for Japan as all four bantamweight champions are from that country. The other three are Ryosuke Nishida (IBF), Takuma Inoue (WBA), and Yoshiki Takei (WBO).