In Athens at the 2004 Summer Olympics, he was eliminated in the first round of the Super Heavyweight (over 91 kg) division by Cuba"s southpaw Michel Lopez Nuñez (13-18). He qualified for the Athens Games by winning the gold medal at the 2004 Asian Amateur Boxing Championships in Puerto Princesa, Philippines. In the final he defeated Tajikistan"s Sergei Kharitonov.
In 2002 and 2006 he became Asian champ beating Olympic silver medallist Mukhtarkhan Dildabekov in the final both times.
2005 he lost to Russian southpaw Roman Romanchuk at the World Championships. 2007 he again made an early exit from the World Championships.
Defeated Ahmed Abdel Samad (Egypt) 21-8
Defeated Art Binkowski (Canada) Royal Society of Chemistry 2
Lost to Mukhtarkhan Dildabekov (Kazakhstan) 22-28
Lost to Michel López Núñez (Cuba) 13-18.