 Simbine aive mumakwikwi ekupedzisira eWorld Championships mumakwikwi evarume emamita zana muna 2017 wechishanu na2019wechina, uye aive shasha yemamita zana ku2018 African Championships uye 2018 Commonwealth Games. Mu 4 × 100 metres relay akabatsira South Africa kuti ive shasha paAfrican Championships muna 2016 na 2018, uye nzvimbo yechipiri pa2018 Commonwealth Games nenguva yeSouth Africa rekodhi yemasekondi 38.24. Akabatsira South Africa kuhwina menduru yegoridhe kumakwikwi e2021 World Relays. 