|This article uses info from Wikipedia|
Many light heavyweight champions unsuccessfully challenged for the heavyweight crown until Michael Spinks became the first reigning light heavyweight champion to win the heavyweight championship. Bob Fitzsimmons captured the light heavyweight championship after losing his heavyweight championship. Two all-time great heavyweight champions, Ezzard Charles and Floyd Patterson, started out as light heavyweights. Charles defeated Archie Moore and Joey Maxim several times in non-title bouts before becoming heavyweight champion and Patterson lost an eight-round decision to Joey Maxim before becoming heavyweight champion himself. Evander Holyfield successfully moved up from the light-heavyweight division to the cruiserweight division and eventually the heavyweight division and became undisputed champion of the latter two.