 Complete the following phrase:  A martial arts enthusiast since his youth, Filipović started his professional career in 1996 as a kickboxer, following in the footsteps of his compatriot Branko Cikatić. Before turning pro, he had accumulated an amateur boxing record of 488 31 KOs. He defeated Jérôme Le Banner in his debut, but after losing to Ernesto Hoost in his next match, he turned his attention back to boxing and his law enforcement career. He had success in both areas as a three-time national amateur boxing champion and later joined the Lučko Anti-Terrorist Unit where he served for six years until he was elected to the Croatian Parliament. Filipović took part in the 