Kammala jumla mai zuwa: Dorsey an yanke shi ne daga sansanin gwajin kwando na Amurka don tawagar 'yan kasa da shekaru 18 a shekarar 2014. A shekara mai zuwa, kafin
Lokacin da aka fara gasar cin kofin duniya ta FIBA ta 19 a shekarar 2015, an gayyace shi zuwa sansanin gwaji na tawagar 'yan wasan Girka ta 19. Ya zama muhimmin ƙari ga ƙungiyar, yayin da ya ci gaba da yin rikodin maki 15.9 da 5.0 a kowane wasa, kuma ya jagoranci ƙungiyar a cikin mintuna da aka buga. Ƙungiyar Girka ta tafi 5<unk>2. Bayan sun ci wasanninsu 5 na farko, sai suka fadi a hannun Amurka a wasan kusa da na karshe, kuma daga baya suka yi rashin nasara a wasan lambar tagulla da Turkiyya. An zaɓe shi a cikin Teamungiyar All-Tournament Team, duk da cewa ƙungiyarsa ba ta sami matsayi a kan lambar yabo ba.