<Tr> <Td> Joe Calzaghe </Td> <Td> 46--0--0 (0) </Td> <Td> Super middleweight </Td> <Td> WBO </Td> <Td> 1997--2008 </Td> <Td> 21 </Td> <Td> Vacated title to move up to light heavyweight . </Td> </Tr> <Tr> <Td> IBF </Td> <Td> 2006 </Td> <Td> </Td> <Td> Vacated title to fight Peter Manfredo Jr. instead of #1 contender Robert Stieglitz . </Td> </Tr> <Tr> <Td> The Ring, lineal </Td> <Td> 2006--2008 </Td> <Td> </Td> <Td> Vacated titles to move up to light heavyweight . </Td> </Tr> <Tr> <Td> WBA, WBC </Td> <Td> 2007--2008 </Td> <Td> 0 </Td> </Tr>

Who has the best boxing record of all time