5 Oct 1988
Duke McKenzie beats Rolando Bohol via knockout 11/12
Flyweight (112 lb)
Duke McKenzie becomes the IBF Flyweight world champion
8 Mar 1989
Duke McKenzie beats Tony DeLuca via knockout 4/12
7 Jun 1989
Dave McAuley beats Duke McKenzie via unanimous decision 12/12
30 Jun 1991
Duke McKenzie beats Gaby Canizales via unanimous decision 12/12
Bantamweight (118 lb)
Duke McKenzie becomes the WBO Bantamweight world champion
12 Sep 1991
Duke McKenzie beats Cesar Soto via unanimous decision 12/12
25 Mar 1992
Duke McKenzie beats Wilfredo Vargas via knockout 8/12
13 May 1992
Rafael del Valle beats Duke McKenzie via knockout 1/12
15 Oct 1992
Duke McKenzie beats Jesse Benavides via unanimous decision 12/12
Super Bantamweight (122 lb)
Duke McKenzie becomes the WBO Super Bantamweight world champion
9 Jun 1993
Daniel Jimenez beats Duke McKenzie via majority decision 12/12
1 Oct 1994
Steve Robinson beats Duke McKenzie via knockout 9/12
Featherweight (126 lb)