Kammala jumla mai zuwa: Grgić ya lashe lambar zinare a duka 800 m freestyle da kuma 1500 m freestyle taron a
2019 FINA Gasar Cin Kofin Duniya ta Junior a Budapest, Hungary. Tare da lokaci na 14:46.09 a Gasar Junior ta Duniya shi ne mafi saurin dan shekaru 16 da ke yin iyo a mita 1500 na 'yanci a tarihi. Ya ci lambar zinare biyu a tseren tseren mita 400 da tseren mita 1500 a gasar wasannin Olympics ta bazara ta matasa ta Turai ta 2019 (EYOF) a Baku, Azerbaijan.