Undefeated world champion Joe Calzaghe has announced his retirement after an outstanding 16-year professional career.
Joe Calzaghe was unbeaten in 46 fights during a glittering career
The 36-year-old Welshman was a world title holder for more than 11 years and won all of his 46 fights, which included 32 knockouts.
Calzaghe will go down as one of Britain's greatest boxers, but how highly is he rated?
JOE CALZAGHE'S FATHER AND TRAINER ENZO CALZAGHE
"He is the best British boxer of all-time, because he has a heart and character that makes him almost super human, that can't be matched by anyone.
"The final decision I'm really pleased about. He's had a great innings, what a career.
"It's common sense really. There's no way physically he can't do it. His physical attributes are still spot on but the principal consideration is motivation.
"It's nothing about money, it's about getting up in the morning.
"Joe has never ever had a break from the age of 12 or 13, he's always been professional."
BBC SPORT BOXING SUMMARISER RICHIE WOODHALL
"He knows himself when it's over. I don't think there's anything else for him to achieve. The guy's done it all at the end of the day. You've got to say enough is enough at some stage. I think it's the right decision.
"I think he's the number one British fighter, no doubt about it. It may be another 50 or 100 years before a fighter like Joe Calzaghe comes along."
IBO WORLD LIGHT-WELTERWEIGHT CHAMPION RICKY HATTON
"What more can Joe Calzaghe do in his career? He's done Vegas, Madison Square Garden, world champion, two different weights, one of the best pound-for-pound fighters in the world, he's unbeaten.
"To hold the title for as long as he did is an absolutely phenomenal achievement.
"He'll retire as one of the greatest fighters that Britain has ever produced.
"He has fought everyone that's been put in front of him. His best wins were Jeff Lacy and Mikkel Kessler as they were unbeaten and ambitious.
"Anybody who tries to put Joe Calzaghe's record down doesn't know what they are talking about as far as I'm concerned."
EX-WBO CRUISERWEIGHT CHAMPION & STABLEMATE ENZO MACCARINELLI
"He'd proved all his doubters wrong. He achieved things that most fighters can only dream of, it's the end of a chapter.
"He beat everyone put in front of him, he unified all the belts. He beat an American in his backyard.
"What more did he have to do? He's a great ambassador for British sport."
FORMER WBU MIDDLEWEIGHT CHAMPION GARY LOCKETT
"He has the skill, elusiveness and heart of a champion.
"I'm happy for Joe that he's decided to call a halt to his career at exactly the right time.
"It is one of disappointment for me too because even though he is a friend of mine, I'm also one of his biggest fans.
"I've thoroughly enjoyed watching him over the years and even commentated on his last fight in New York."
SPORTS MINISTER GERRY SUTCLIFFE
"Joe Calzaghe's record speaks for itself - a world champion for more than a decade, with an unblemished record that does entitle him to be seen as one of the sport's greats.
"It was my privilege to be in the Millennium Stadium to witness his finest hour, beating Denmark's Mikkel Kessler, and to present him with one of the many awards that were recognition of his considerable achievements.
"Joe has been a great ambassador for sport - with an appeal that stretches way beyond the fans of just boxing - and I hope his talents can be used to inspire young people in the years ahead."
EX-COMMONWEALTH LIGHT-HEAVYWEIGHT CHAMPION NICKY PIPER
"If you judge him on paper and achievements, you have to put him at the very top of course.
"He has certainly put Welsh boxing on the map. The last 20 years have been good for Welsh boxing."