▁December ▁ 1 9 9 3 ) ▁is ▁a ▁Cub an ▁professional ▁box er . ▁As ▁an ▁amateur , ▁he ▁won ▁gold ▁med als ▁at ▁the ▁ 2 0 1 2 ▁and ▁ 2 0 1 6 ▁Olympics ▁as ▁a ▁fly weight ▁and ▁b ant am weight ▁respectively . ▁ ▁Am ateur ▁career ▁ ▁Olympic ▁results ▁London ▁ 2 0 1 2 ▁Round ▁of ▁ 3 2 : ▁De fe ated ▁K ats u aki ▁Sus a ▁( J apan ) ▁ 1 9 – 7 ▁Round ▁of ▁ 1 6 : ▁De fe ated ▁Ch atch ai - de cha ▁But de e ▁( Th ailand ) ▁ 2 2 – 1 0 ▁Qu arter - final s : ▁De fe ated ▁Andrew ▁Sel by ▁( Gre at ▁Britain ) ▁ 1 6 – 1 1 ▁Sem i - final s : ▁De fe ated ▁Michael ▁Con lan ▁( Rep ublic ▁of ▁Ireland ) ▁ 2 0 – 1 0 ▁Final : ▁De fe ated ▁T ug st s og t ▁Ny amb ay ar ▁( M ong olia ) ▁ 1 7 – 1 4 ▁ ▁Rio ▁ 2 0 1 6 ▁Round ▁of ▁ 3 2 : ▁De fe ated ▁Sh iva ▁Th apa ▁( Ind ia ) ▁ 3 – 0 ▁Round ▁of ▁ 1 6 : ▁De fe ated ▁Moh amed ▁Ham out ▁( Mor oc co ) ▁ 2 – 1 ▁Qu arter - final s : ▁De fe ated ▁Z hang ▁J ia wei ▁( Ch