Career
Demyanenko trained at Dynamo in Alma-Ata. Defeated Mohamed Bangura (Sierra Leone) DQ 2
Defeated Jong Jo-Ung (North of Korea) 5-0
Defeated Yordan Lessov (Bulgaria) 5-0
Defeated Richard Nowakowski (East Germany) Royal Society of Chemistry 1
Lost to Ángel Herrera (Cuba) Royal Society of Chemistry 3 (due to injury).