- Golovkin, 40, stops Murata at Japan’s Saitama Super Arena
- Third fight with Canelo Álvarez in September could be next
Gennady Golovkin became the unified world middleweight champion with a ninth-round stoppage of Japanese fighter Ryōta Murata on Saturday.
The Kazakh boxer Golovkin, who turned 40 on Friday, sent his opponent to the canvas with a big right hand and Murata’s corner threw in a towel.