Rubuta ci gaba ga wannan sakin layi - Korkmaz ya kasance memba na matasa 'yan wasan kasa na Turkiyya. Tare da 'yan wasan matasa na Turkiyya, ya taka leda a: 2013 FIBA Turai Under-16 Championship, wanda ya jagoranci a raga, 2014 FIBA Turai Under-18 Championship, inda ya lashe lambar zinare, 2015 FIBA Turai Under-18 Championship, inda ya lashe lambar azurfa kuma an kira shi zuwa ga All-Tournament Team, kuma a 2015 FIBA Under-19 World Cup
, inda ya lashe lambar tagulla kuma an kira shi zuwa Team All-Tournament Team.