Tyson reached his peak during the 1980s. He dominated the second half of the decade like few boxers before him

1985 – March 6 - Hector Mercedes, Albany, New York, TKO 1

in 1986 he won the junior heavyweight title by upsetting World Boxing  Association (WBA) champion Dwight Muhammad Qawi in a 15-round split  decision

In April 1988, with an eighth-round knockout of Carlos DeLeon, Holyfield became boxing’s first undisputed cruiserweight champion

29Mar 7, 1987 20 James Smith WinUD

33Jan 22, 1988 21 Larry Holmes WinTKO4

57Jul 30, 2004 38 Danny WilliamsLossKO4

58Jun 11, 2005 38 Kevin McBrideLossRTD6