With lightning-quick reflexes and more than a touch of flair, Japanese boxer Naoya "the Monster" Inoue became the world's undisputed bantamweight champion with an 11th-round knockout of Britain's Paul Butler on Tuesday night.The crowning accomplishment at Tokyo's Ariake Arena improved the 29-year-old's record to 24-0 with 21 knockouts as he added Butler's WBO title to his own WBA, WBC and IBF belts. The 34-year-old Butler fell to 34-3 with 15 KOs.Inoue became the ninth undisputed champion since the four-belt era began in 2004, and the first Japanese to do so.In what he said would be his fin…READ FULL ARTICLE