Wigness ogé jadi bagian ti tim Australia anu meunang medali emas dina FIBA Under-18 Asian Championship 2018 jeung FIBA Oceania Under-18 Championship 2019 ogé bersaing pikeun nagara asalna di FIBA Under-17 Basketball World Cup 2018 jeung FIBA Under-19 Basketball World Cup 2019
. tapi Dina taun pamungkasna saméméh jadi profésional anjeunna maén dina usum 2019 NBL1, dimana anjeunna rata-rata 11.7 poin, opat assists jeung 3.4 rebounds per game pikeun Basketball Australia Centre of Excellence. Dina final usumna, manéhna nyatet 22 poin jeung 12 assists. Wigness disorot ku sababaraha pramuka akademi jeung NBA nalika anjeunna ngumbara ka Charlotte, Karolina Kalér pikeun bersaing dina 2019 Basketball Tanpa Border Global Camp jeung walked jauh jeung All-Turnamén honors.