These 5 southpaws won a portion of HW title, Michael Moorer won lineal title. Michael Moorer - WBA, WBO, 2 times IBF beltholder, 5-2 in HW title fights Chris Byrd - IBF, WBO beltholder, 5-2-1 in HW title fights Corrie Sanders - WBO beltholder, 1-1 in HW title fights Ruslan Chagaev - WBA Beltholder, 3-1 in HW title fights, 5-3 if you include WBA regular Sultan Ibragimov - WBO beltholder, 2-1 in HW title fights
