 Pari gbolohun ti o tẹle: Nikolić ṣe akọkọ rẹ fun orilẹ-ede FR Yugoslavia ni 1999 World Championship, ti o gba ami ẹyẹ idẹ. O tun kopa ninu awọn ere Olimpiiki Igba Irẹdanu Ewe 2000 ati awọn aṣaju European meji 2004 ati : 2006. Ṣaaju ki o to, Nikolić gba ami ẹyẹ goolu ni 1998 World University Championship. 