Floyd Mayweather Jr is another fighter to have retired undefeated but legends like Joe Louis, Muhammad Ali, Sugar Ray Robinson and Sugar Ray Leonard all suffered blots on their copy book.

BBC: Calzaghe ready to cement legacy

He particularly remembered fighting soon afterwards on the same bill as Sugar Ray Robinson.

BBC: 5. Howard Winstone

From 1940-65, Sugar Ray Robinson had 200 fights, winning 173 with 19 loses, 6 draws and 2 no contests.

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The careers of Benny Leonard, Joe Louis, Henry Armstrong and most of all, Sugar Ray Robinson, attest that defeats don't always debunk.

WSJ: Mayweather's Next Opponent: History

But should the warrior from south Wales beat Jones in his 46th professional fight, Calzaghe would achieve a feat that even Muhammad Ali, Sugar Ray Robinson and Joe Louis failed to accomplish.

BBC: Calzaghe hits back at the critics

This time, Robinson could only palm a low Ray Parlour effort onto the inside of a post and the ball bounced back invitingly for Henry to head into the empty net.

BBC: Viduka hands title to Man Utd

Ray Haynes and led by Casey Institute Chair Roger W. Robinson, Jr. illuminated for members of the California state legislature's Joint Legislative Audit Committee (JLAC) a distressing prospect: Many millions of dollars in CalPERS' and other American investment portfolios are being unwittingly invested in companies engaged in behavior inconsistent with this country's fundamental human rights precepts and national security interests.

CENTERFORSECURITYPOLICY: Center For Security Policy