who were the super middleweight champs?
joe calzaghe, sven ottke, frankie liles, lucian bute, chris eubank, andre ward, chong-pal park, nigel benn, robert stieglitz, mikkel kessler
which had over 20 successful defences?
joe calzaghe, sven ottke
of these, who of these had a reign of over ten years?
joe calzaghe