Cika wannan jumla: Holmgren ya wakilci Amurka a taron
2021 FIBA Under-19 Kwallon Kwando na Duniya a Latvia. Ya yi matsakaicin maki 11.9, 6.1 ya dawo, 3.3 yana taimakawa kuma 2.7 yana toshe kowane wasa, yana jagorantar tawagarsa zuwa lambar zinare, kuma ya sami lambar yabo ta MVP.