Australian athlete, 27, won two Olympic gold medals in Paris Jack served a doping ban after Ligandrol was found in her system Australian swimmer Shayna Jack has announced she will retire after the Commonwealth Games in Glasgow. In a video posted on Instagram in which Jack spoke with her coach Dean Boxall, the freestyler fought back tears as she said the Games – from 23 July to 2 August – would be her competitive swan song. Continue reading...