Konstantinov was born in Sofia; both his parents, Georgi and Eva née Doycheva, are former volleyball internationals and his older brother Julian Konstantinov is an opera singer.[2] Like his father, he bears the nickname Gibona ("The Gibbon"). He is 2.02 metres (80 in) tall and weighs 93 kilograms (210 lb).[1]
Konstantinov's awards and achievements include Bulgarian championship titles with Levski and Slavia, Greek championship titles with Aris, Iraklis, Olympiakos and Panathinaikois and a French championship title with Tours. He has also won the Greek Cup once and the Supercup twice with Iraklis and the Bulgarian Cup twice with Slavia. He has twice been awarded the Greek Championship Volleyball Player of the Year prize. In 2006, he won third-place bronze medals from the 2006 FIVB Men's World Championship and the 2007 FIVB Men's World Cup in Japan with the Bulgaria national team.[1] In 2008, he was voted Bulgaria's Man of the Year in an online poll organized by Darik Radio.[3]
^ "Пламен Константинов стана мъж на годината" (in Bulgarian), Топспорт (2008-11-10). Retrieved on 15 November 2008. "По-малък брат на известния оперен певец Юлиян Константинов (р. 1966)." ("His older brother is the well-known opera singer Yuliyan Konstantinov (born 1966)."