<prompt> Pedzisa mutsara unotevera: Knox akatumidzwa zita rake rokutanga kuchikwata chenyika yeCanada pa2018 Summer Youth Olympics yakaitwa muBuenos Aires, Argentina. Mumutambo uyu, Knox akahwina bronze mumakwikwi emamita mazana maviri. Muna 2019, Knox akahwina menduru mbiri mumakwikwi emamita mazana maviri.  <response>: 2019 FINA World Junior Swimming Championships muBudapest. 