Dorsey akatanga kubviswa mumusangano weUSA Basketball wekuyedza timu yayo yenyika yeUnder-18 muna 2014. Gore rakatevera, pamberi pe2015 FIBA Under-19 World Cup
akatanga, akakokwa kumusasa wokuedza weGreece Under-19 national team. Akaratidza kuva kuwedzera kwakakosha kuchikwata, sezvo akaenderera mberi nekurekodha 15.9 mapoinzi uye 5.0 rebounds pamutambo, uye zvakare akatungamira timu mumaminetsi akatambwa. Chikwata chechiGiriki chakaita 5<unk>2. Pashure pokukunda mitambo yavo yokutanga ye5, vakawira kuU.S.A. mumutambo wokupedzisira, uye gare gare vakarasikirwa mumutambo wemenduru yendarira kuTurkey. Akasarudzwa kupinda mumutambo weAll-Tournament Team, pasinei nokuti chikwata chake hachina kuwana nzvimbo pamakwikwi emadhora.