Part of the Dimitrov family which has produced significant success in Combat Sambo for Bulgaria, Rumen has medaled two consecutive years in the middleweightcategory for Combat Sambo. When he was a child he weighed around 100kilograms, but his coach Gele, who taught him sambo and judo, made him the professional he is today.
Competing primarily in Bulgaria, Dimitrov has proven himself to be a risingprospect much like his brother Rosen Dimitrov. He is the current MAX FIGHT middleweight champion, which is a Bulgarian promotion.