Paul Butler went head to head with the now undisputed bantamweight champion in December.
Naoya Inoue stopped Paul Butler in the 11th round to become undisputed bantamweight champion; the Japanese fighter added Butler’s WBO title to his WBA, WBC and IBF belts.
Butler, who became a world champion for the second time in his career in May when he was elevated from interim to full WBO champion status after former title holder John Riel Casimero was stripped of the belt, loses for the third time in 37 professional contests.
It was the first time Inoue had been taken beyond eight rounds since his epic 2019 victory over Nonito Donaire.