Dee ihe na-aga n'ihu maka paragraf a - N'afọ 2017, Mastromatteo so na ndị otu nrite ọla edo meriri 4x100 medley na 2017 World Junior Swimming Championships. N'afọ 2019, Mastromatteo nwetara ihe nrite 3 na 2019 World Junior Swimming Championships
na Budapest, gụnyere ọlaọcha onye n'ime 50 m breaststroke.