Hungary's Katinka Hosszu set a world record for the women's 200 metres individual medley at the world swimming championships on Monday.
Ariana Kukors, who represented the United States in the 2012 Olympic Games, said Sean Hutchison, then a coach for USA Swimming's national team, began "grooming" her for a sexual relationship when she was 13.
Hungary's Katinka Hosszu underlined her status as the leading all-round swimmer with a world record in the women's 200 metres individual medley at the world championships on Monday.