<prompt> Ramba uchinyora ndima iyi - Petersen akaumba nhoroondo yake yokushambira pa1999 Pan Pacific Swimming Championships muSydney, kwaakawana nzvimbo yechina munhangemutange ye100 m yebreaststroke, achingova nechidimbu chiduku kunze kwepodiyamu. Mugore rimwe chetero, Petersen akaendesa kumusha menduru yegoridhe yeSouth Africa mu100 m breaststroke 1:02.63 paAll-Africa Games  <response>: muJohannesburg. 