Naoya Inoue became the first Japanese boxer to collect all four world titles in a single weight class when he knocked out Britain’s Paul Butler in Tokyo on Dec. 13. But Inoue, the new undisputed ...

Japan's Naoya Inoue became the second male boxer to be a four-belt undisputed champion in two weight divisions with a 10th-round knockout of Marlon Tapales in Tokyo on Tuesday. Inoue unified the super ...