FILE - Britain's Hannah Miley competes in a women's 200-meter individual medley semifinal during the swimming competitions of the World Aquatics Championships in Budapest, Hungary, on July 23, 2017. Three-time Olympian Hannah Miley of Britain has retired from competitive swimming at the age of 32. The Scottish individual medley specialist is a former world, European and Commonwealth Games champion. Miley was a finalist for Britain at three consecutive Olympics, most recently the 2016 Rio de Janeiro Games where she finished fourth in the 400-meter individual medley. (AP Photo/Michael Sohn, File)