Kyung-Yung Lee has three losses against three opponents on his boxing record. For a list of Lee's best fights, refer to "Best fights of Kyung-Yung Lee".
On July 11, 1993 Kyung-Yung Lee fought Pichit Sithbanprachan in a flyweight world-title fight for Sithbanprachan's IBF title. Lee was 26 years old and with a record of 20-3 (8). Lee lost the fight via 1st-round TKO.
On December 21, 1991 Kyung-Yung Lee fought Ricardo López in a strawweight world-title fight for López' WBC title. Lee was 25 years old and with a record of 20-2 (8). Lee lost the fight via 12-round unanimous decision.
On January 31, 1988 Kyung-Yung Lee fought Hiroki Ioka in a strawweight world-title fight for Ioka's WBC title. Lee was 21 years old and with a record of 11-1 (4), and Ioka was 19 years old and with a record of 9-0 (5). Lee lost the fight via 12th-round TKO.
