World number one Ana Ivanovic was knocked out of the US Open in the second round when she was beaten 6-3, 4-6, 6-3 by French qualifier Julie Coin on Thursday.
Ivanovic suffered the earliest exit by a women's top seed at the US Open since tennis turned professional in 1968.
Ranked 188th in the word, 25-year-old Frenchwoman Coin recorded eight aces and benefited from 34 unforced errors by Ivanovic to bounce the Serb from the tournament.