Jack broke her hand as she was warming up for Wednesday
morning’s 100-meter freestyle heats.
The 23-year-old Jack previously helped Australia to gold in
the women’s 4x100 freestyle relay on Saturday and silver in the mixed 4x100
medley relay on Tuesday.
Jack is just the latest high-profile swimmer to pull out of
the competition. Hong Kong’s Siobhán Haughey, the Olympic silver medalist in
the women’s 100, withdrew on Monday due to an ankle injury.
Australia’s Mollie O’Callaghan was fastest in 100 qualifying
in their absence, followed by Canada’s Penny Oleksiak, the United States’ Torri
Huske, and world record holder Sarah Sjöström.
Four-time Olympic medalist Chad Le Clos withdrew from the
men’s competition Monday. The South African said on social media that he had
been struggling with his breathing for the previous three weeks “since having
multiple stints of bronchitis.”
American star Caeleb Dressel withdrew from the men’s 100
freestyle on medical grounds on Tuesday.
USA Swimming told The Associated Press on Wednesday there
was no update yet on Dressel’s condition.