Natalya Antyukh

Natalya Nikolayevna Antyukh is a Russian athlete who primarily competes in the 400 metres and 400 metre hurdles. She won the gold medal in 400m hurdles at the 2012 Summer Olympics, after winning a bronze medal in the 400 m dash at the 2004 Olympics. She is the only woman to win an Olympic medal in both the 400 m hurdles and 400 m dash.

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Source: Wikipedia