According to Demetrious Johnson, the decision to retire will be irrevocable: “Once I’m done, I’m done”
Demetrious Johnson, the current holder of the ONE Flyweight World Championship, will not be one of those fighters who “sail off into the sunset” only to eventually reverse their decision and return to competition. After Johnson’s five-round masterclass against Adriano Moraes at ONE Fight Night 10 earlier this month, the entirety of the mixed martial …