1
Former Irish, British and European champion Matthew Macklin has retired from boxing.
2
Tyson retired from boxing in 2005 after a career marked by controversy.
3
He retired from boxing in 2005 after a career marked by controversy.
4
Steve Collins has finally retired from boxing.
5
Since he retired from boxing in 1981, Ali has worked on philanthropic and social causes around the world.
6
Tyson retired from boxing in 2006.
7
The diagnosis of Parkinson's syndrome, which has been linked to head trauma, came about three years after Ali retired from boxing in 1981.
8
Although he retired from boxing in 1981 when I was only 3 years old, he was still the biggest celebrity in my world.