Toshiaki Nishioka won a unanimous decision against Rendall Munroe to successfully defend the WBC super bantamweight crown for the fifth time on Sunday.

All three judges had the bout 119-109 in favor of Nishioka against his top-ranked British challenger. Nishioka saw his record improve to 37-4, including 23 knockouts, with three draws.

The Hyogo native used his speed effectively, dipping in and out with pinpoint strikes to the body to rack up points at Ryogoku Kokugikan.

"My opponent was really good and put a lot of pressure on me. My plan was to use my speed and bob to the side as I hit him," Nishioka said. "Everyone was hoping that I would get a knockout but unfortunately I wasn't able to do it. I'm sorry."