Michelle Carter shocked the track and field world by winning Olympic gold in the women's shot put at Rio 2016 on Friday.
With an American-record heave of 20.63 metres in her sixth and final attempt, Carter dethroned two-time defending Olympic champion and heavy favourite Valerie Adams of New Zealand.
She is the first American woman to win gold in the shot put and only the second to medal, after Earlene Brown took bronze in the 1960 Rome Games.
Carter had been in second place behind Adams after the Kiwi's throw of 20.42 in the second round, but the 30-year-old Texan's monster final effort left Adams needing something special to respond. She managed a 20.39 - the third-best individual distance of any competitor - but it was not enough.
Anita Marton of Hungary took bronze with a throw of 19.87, also a national record.
Carter, the daughter of former San Francisco 49ers defensive lineman and 1984 shot put silver medalist Michael Carter, finished fifth in the shot put four years ago in London and 15th at Beijing 2008.