Top Welsh boxer Joe Calzaghe has revealed that he will not fight ever again as he is retiring from the sport.
The 36-year-old has never been beaten in 46 fights in the ring, and retires as the world super-middleweight and light-heavyweight champion.
Calzaghe said: "It was a difficult decision but I have achieved everything I wanted to achieve in boxing.
"I've been world champion for 11 years. I've got no other goals to go for. That's why I am calling it a day."
Very few boxers quit the sport without having been beaten, and some experts think he may be Britain's best ever boxer.
Of those 42 wins from as many fights, Calzaghe won 32 of them with knockouts.
Joe Calzaghe picks up a CBE award from the Queen in 2008
He was the BBC Sports Personality of the year in 2007, weeks after a brilliant win over Mikkel Kessler at the Millennium Stadium in Cardiff.
Calzaghe's last two victories came against two of the best fighters around - America's Bernard Hopkins and Roy Jones Jnr.
Calzaghe said: "I had a long think with my family. My children wanted me to give up, plus my mum. That's why I called it a day and will go on to do something else."