16 Nov 1984
Dodie Boy Penalosa beats Choi Jum-hwan via unanimous decision 15/15
Light Flyweight (108 lb)
7 Dec 1986
Choi Jum-hwan beats Cho Woon Park via unanimous decision 15/15
Choi Jum-hwan becomes the IBF Light Flyweight world champion
29 Mar 1987
Choi Jum-hwan beats Tacy Macalos via split decision 15/15
5 Jul 1987
Choi Jum-hwan beats Toshihiko Matsuda via knockout 4/15
9 Aug 1987
Choi Jum-hwan beats Azadin Anhar via knockout 3/15
4 Nov 1988
Choi Jum-hwan's IBF Light Flyweight world title reign ends
5 Nov 1988
Tacy Macalos beats Choi Jum-hwan via unanimous decision 12/12
12 Nov 1989
Choi Jum-hwan beats Napa Kiatwanchai via knockout 12/12
Minimumweight (105 lb)
Choi Jum-hwan becomes the WBC Minimumweight world champion
7 Feb 1990
Hideyuki Ohashi beats Choi Jum-hwan via knockout 9/12