<prompt> Ngwala tšwetšopele ya serapa se - Ka 2017, Mastromatteo e be e le karolo ya sehlopha sa go thopa gauta sa go thopa sefoka sa 4x100 ya go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa ka go kopanywa.  <response>: .. le Ka 2019, Mastromatteo o thopile dimetale tše 3 ka 2019 World Junior Swimming Championships ka Budapest, go akaretšwa le sa motho ka noši sa silibera ka 50 m breaststroke. 