He won an Olympic gold medal in 1976 and world titles in 1974, 1977, 1978 and 1979, placing second in 1975 and third in 1973.

After that he retired and worked as a wrestling coach with the Turkish national team.

Yumin was born in Omsk in Siberia, but soon moved to the south to Kaspiysk, Dagestan.

He spent most of his life there, and died of a heart attack aged 64.

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