Buuxi weedha soo socota: Lountzis wuxuu ahaa kabtanka xulka qaranka ee da'yarta Griiga ee da'doodu ka yar tahay 16 jirka ee 2014 FIBA Europe Under-16 Championship. Wuxuu sidoo kale la ciyaaray xulka qaranka ee da'yarta ee Giriigga.
2015 FIBA Under-19 World Cup, 2015 FIBA Europe Under-18 Championship, halkaas oo uu ku guuleystay billad dahab ah, iyo qaybta 2aad 2016 FIBA Europe Under-20 Championship Division B, halkaas oo uu ku guuleystay billad naxaas ah. Wuxuu sidoo kale ka ciyaaray 2017 FIBA Europe Under-20 Championship, halkaas oo uu ku guuleystay billad dahab ah.