Lengkepan kalimah di handap ieu: Domínguez meunang medali pérak jeung Spanyol di 2018 FIBA U16 Championship Éropa di Sérbia, rata-rata 8,9 poin. Dina 2019 FIBA U16 European Championship di Italia, anjeunna dingaranan pamuter paling berharga saatos rata-rata 13,4 poin, 3,4 rebound sareng 2,3 assists per pertandingan sareng mingpin Spanyol pikeun medali emas. Domínguez mingpin timnya ka tempat kalima di
2021 FIBA Under-19 World Cup di Latvia, rata-rata 18.7 poin, 2.9 rebound jeung 2.4 assists per game.