starting with the 50s, and ending with the 90s: 50: idk 51: Walcott vs. Charles III 52: Marciano vs. Walcott I 53: Marciano vs. LaStarza II 54: Marciano vs. Charles I 55: Marciano vs. Moore 56: Patterson vs. Jackson I 57: idk 58: idk 59: Liston vs. Williams I 60: Liston vs. Williams II 61: Patterson vs. Johansson III 62: Jones vs. Folley II 63: Ali vs. Jones 64: Liston vs. Ali I 65: Patterson vs. Chuvalo 66: Frazier vs. Bonavena I 67: Ellis vs. Bonavena 68: Frazier vs. Bonavena II 69: Frazier vs. Quarry I 70: Frazier vs. Ellis I 71: Frazier vs. Ali I 72: Patterson vs. Bonavena 73: Ali vs. Norton II 74: Ali vs. Foreman 75: Ali vs. Frazier III 76: Foreman vs. Lyle 77: Young vs. Foreman 78: Holmes vs. Norton 79: Holmes vs. Shavers II 80: Weaver vs. Tate 81: Holmes vs. Berbick 82: Snipes vs. Berbick 83: Coetzee vs. Dokes 84: idk 85: Thomas vs. Weaver 86: Berbick vs. Thomas 87: idk 88: idk 89: Holyfield vs. Dokes 90: Mercer vs. Cooper 91: Holyfield vs. Foreman 92: Bowe vs. Holyfield I 93: Holyfield vs. Bowe II 94: Foreman vs. Moorer 95: Bowe vs. Holyfield III 96: Bowe vs. Golota II (Mercer vs. Witherspoon a close second) 97: idk 98: idk 99: Jefferson vs. Harris
