Japanese boxer Naoya Inoue on Tuesday restated his readiness to move up to the super bantamweight division after stopping Britain's Paul Butler in the 11th round to become the world's undisputed bantamweight champion with all four major belts.
Inoue, nicknamed "Monster" for his domination in the ring, will join the weight class, in which Stephen Fulton of the United States holds the WBC and WBO belts, and Murodjon Akhmadaliev of Uzbekistan has the WBA and IBF titles.
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"Super bantamweight is packed with strong boxers," Inoue said after his one-sided title unification bout victory at Tokyo's Ariake Arena. "Two men have each unified two titles, so it might be hard to get a chance to challenge, but I want to become a top contender."
The undefeated 29-year-old has won world titles in three different weight divisions -- light flyweight, super flyweight and bantamweight.