Rubuta ci gaba don wannan sakin layi - Asali mai nauyin bantamweight (ƙasa da kilo 63), Lee ya ɗan rage nauyi zuwa nauyin tashi (ƙasa da kilo 58) bayan Gasar Cin Kofin Duniya ta 2011
domin fafatawa a wasannin Olympics na 2012, inda akwai nau'ikan nauyi hudu kawai. Lee ya fara fitowa a matsayin dan wasa na kasa da kasa a gasar cin kofin duniya ta 2011 ta Taekwondo Olympic Qualification Tournament a Baku, Azerbaijan inda ya yi rashin nasarar kasa da kasa ta farko ga Gabriel Mercedes mai lambar azurfa ta Olympics ta 2008 14<unk>12 a wasan kusa da karshe. A watan Mayu na 2012, duk da haka, ya kama lambar zinare ta farko a gasar zakarun Asiya ta Taekwondo ta 2012, inda ya doke zakaran zakarun Asiya Pen-Ek Karaket 8<unk>4 a wasan karshe. A Wasannin Olympics na bazara na 2016, Lee ya lashe lambar tagulla, inda ya doke Jaouad Achab daga Belgium 11<unk>7. A cikin 2016 WTF World Taekwondo Grand-Prix, Lee ya lashe zinare a kan Konstantin Minin.