Tokyo welterweight Ryota Toyoshima added the WBO Asia Pacific title to his OPBF strap with a 10th round knockout of Yuki Beppu.
Toyoshima was leading on all three ringside judges scorecards when referee Yuji Fukuchi counted out 25-year-old Beppu at 2:59 of the 10th round.
Scores at the time of the stoppage: Tetsuya Iida 90-80 | Nobuhiro Matsubara 88-82 | Toshio Sugiyama 90-80.