Ku qor sii wadida cutubkan - Predojević wuxuu xubin ka ahaa kooxda bilada lacagta ku guuleysatay ee ŠK Bosna Sarajevo Koobka Naadiga Yurub ee 2004. Marka lagu daro seddexdiisa Cadet Championships ee FR Yugoslavia, wuxuu sidoo kale ahaa Cadet Champion of Republika Srpska 10 jeer intii u dhaxeysay 1997-2004, Horyaalka Dhallinyarada ee Republika Srpska iyo Bosnia iyo Herzegovina sanadkii 2005 iyo Horyaalka Junior ee Bosnia iyo Herzegovina saddex jeer (2001, 2003, 2004). Wuxuu matalayay Bosnia iyo Herzegovina Olombikada Chess-ka 2004, 2006, 2008, 2010 iyo 2014. Xafladii 2008
wuxuu gaaray qiimeyn dhan 2745, taasoo ah kaalinta afaraad ee ugu wanaagsan guddiga 2.