2 Feb 1980
Rafael Orono beats Lee Seung-hoon via split decision 15/15
Super Flyweight (115 lb)
3 Jun 1982
Lupe Pintor beats Lee Seung-hoon via knockout 11/15
Bantamweight (118 lb)
2 Feb 1985
Victor Callejas beats Lee Seung-hoon via unanimous decision 15/15
Super Bantamweight (122 lb)
18 Jan 1987
Lee Seung-hoon beats Prayurasak Muangsurin via knockout 9/15
Lee Seung-hoon becomes the IBF Super Bantamweight world champion
5 Apr 1987
Lee Seung-hoon beats Jorge Urbina Diaz via knockout 10/15
19 Jul 1987
Lee Seung-hoon beats Leon Collins via knockout 5/15
27 Dec 1987
Lee Seung-hoon beats Jose Sanabria via split decision 15/15
1 Jan 1988
Lee Seung-hoon's IBF Super Bantamweight world title reign ends
29 May 1988
Daniel Zaragoza and Lee Seung-hoon share a draw 12/12