[2] He competed for the Yantra Gabrovo club from 1980 to 1990, with the exception of 1985-1986 when he was in CSKA.

Petrov is 7 times champion of Bulgaria - 1985, 1986, 1987 and 1990 for men and 1981, 1982 and 1983 for juniors.

His strongest year was 1987 when he became World Champion in Ostrava, European Champion in Reims, he won the World Cup after winning the final tournament in Seoul.

He set four world records in the 67.5 kg weight class.

[3] Petrov died unexpectedly in 1993 after not waking from anesthesia.