Ṣẹ̀kún gbólóhùn yìí: Korkmaz jẹ́ ọmọ ẹgbẹ́ agbábọ́ọ̀lù orílẹ̀-èdè Turkey. Pẹlu awọn ẹgbẹ orilẹ-ede ọdọ ti Tọki, o dun ni: 2013 FIBA European Under-16 Championship, eyiti o ṣe itọsọna ni igbelewọn, 2014 FIBA European Under-18 Championship, nibiti o ti gba ami wura, 2015 FIBA European Under-18 Championship, nibiti o ti gba ami fadaka ati ti a darukọ si Ẹgbẹ Gbogbo-ije, ati ni
2015 FIBA Under-19 World Cup, níbi tí ó ti gba àmì ẹ̀yẹ idẹ àti tí wọ́n pè ní All-Tournament Team.