<prompt> Feleletša polelo e latelago: Petersen o ile a thoma histori ya gagwe ya go rutha ka 1999 go Pan Pacific Swimming Championships kua Sydney, moo a ilego a ba wa bone go 100 m breaststroke, a le kgole kudu le go fihla sethaleng. Ka wona ngwaga woo, Petersen o ile a thopa sefoka sa gauta sa Afrika Borwa ka 100 m breaststroke 1:02.63 ka  <response>: Dipapadi tša Afrika ka Moka kua Johannesburg. 