Mezue ahịrịokwu na-esonụ: Domínguez meriri ọlaọcha na Spain na 2018 FIBA U16 European Championship na Serbia, nkezi 8.9 isi. Na 2019 FIBA U16 European Championship na Italy, akpọrọ ya onye ọkpụkpọ kachasị baa uru mgbe ọ gbakọtara 13.4 isi, 3.4 rebounds na 2.3 na-enyere aka kwa egwuregwu ma na-eduga Spain na ọla edo. Domínguez duziri ndị otu ya n'ebe nke ise na
2021 FIBA Under-19 World Cup na Latvia, nkezi 18.7 isi, 2.9 rebounds na 2.4 enyere aka kwa egwuregwu.