Kammala jumla mai zuwa: A taron Tokyo na gasar cin kofin duniya na FINA na 2018, Namba ta lashe lambar azurfa a tseren mita 400 na mata, da kuma lambar tagulla a tseren mita 800. A gasar cin kofin duniya ta 2019, ta dauki tagulla a tseren mita 400. Ta zama ta biyu a tseren mita 800 na 'yanci a gasar
2019 FINA Gasar Cin Kofin Duniya ta Junior.