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GOLD COAST, AUSTRALIA - JUNE 30: Australian hurdles athlete Sally Pearson speaks to the media during a press conference on June 30, 2016 in Gold Coast, Australia. Pearson yesterday withdrew from the 2016 Rio Olympic Games due to a hamstring injury. (Photo by Chris Hyde/Getty Images)

GOLD COAST, AUSTRALIA - JUNE 30:  Australian hurdles athlete Sally Pearson speaks to the media during a press conference on June 30, 2016 in Gold Coast, Australia. Pearson yesterday withdrew from the 2016 Rio Olympic Games due to a hamstring injury.  (Photo by Chris Hyde/Getty Images)