Olympic gold medallist Audley Harrison said Tuesday he was retiring from professional boxing following his latest professional loss.
The 41-year-old Briton was knocked out by Deontay Wilder of the United States in Sheffield, northern England, on Saturday.
"There are only so many times you can fall before it becomes foolhardy to continue," said Harrison, whose professional career failed to build on the promise he showed as an amateur boxer.
"I've fallen a lot, but winning the (world) heavyweight title was a destination I really wanted to get to. Coming back from adversity has been synonymous with my life.
"I've done well to turn my life around, but sadly my dream to be a legitimate world champion will be unrealised."