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| Personal information | |||||||||||||||
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| Full name | 이옥성 | ||||||||||||||
| Nationality |  South Korea | ||||||||||||||
| Born | February 7, 1981 Jinju, Gyeongsangnam-do | ||||||||||||||
| Height | 1.72 m (5 ft 8 in) | ||||||||||||||
| Weight | 51 kg (112 lb) | ||||||||||||||
| Sport | |||||||||||||||
| Sport | Boxing | ||||||||||||||
| Weight class | Flyweight | ||||||||||||||
Medal record
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Lee Ok-Sung (born February 7, 1981, in Jinju, Gyeongsangnam-do, South Korea) is a South Korean amateur boxer best known for winning the 2005 World Amateur Boxing Championships in the men's flyweight division.