 He cites British former undisputed heavyweight world champion Lennox Lewis as his boxing idol.Gjergjaj won the EBU-EE European heavyweight title in October 2014, beating Adnan Redzovic by a knockout in the 9th round.He defended his title against Denis Bakhtov in June 2015, winning on points despite suffering a broken hand and burst eardrum, and being knocked down in the fifth round for the first time in his career.