 Nikolic akaita kutanga kwake kukuru kwepasi rose kweFR Yugoslavia pa1999 World Championship, achikunda menduru yebronze. Akatorawo chikamu mumitambo yeOlympic yezhizha ya2000 uye maEuropean Championships maviri 2004uye 2006. Pakutanga, Nikolić akakunda menduru yegoridhe pa1998 World University Championship. 