Emma McKeon, 27, who won more medals (four) than any other Australian swimmer in Rio, came home first in 52.35 seconds at the South Australia Aquatic Centre with Campbell clocking 52.59.
Emma Mckeon, 27, yo o ikgapetseng dimmentlele (nne) tse di fetang tsa bathumi botlhe kwa Rio, e nnile ena wa ntlha go fitlha kwa gae mo motsotswaneng e le 52.35 kwa senthareng ya Aquatic kwa borwa jwa Australia fa Campbell ena a fitlheletse 52.59.