<prompt> Petersenye hawarnzǝ kǝnǝngatǝbe dǝga suro Pan Pacific Swimming Championships saa 1999 dǝlan Sydney lan, na do shiye na kǝn diyaume suro 100 m breaststroke dǝlan, gana laa suro podium dǝn. Suro saa adǝben, Petersen ye lardǝ South Africa be dǝro medal konnube sǝdǝna suro mita 100 breaststroke 1:02.63 lan suro All-Africa Games be ladǝn.  <response>: Johannesburg lan. 