NEW YORK: World No 1 Dinara Safina and three-time Grand Slam champion Maria Sharapova crashed out of the US Open at the hands of teen titans on Saturday, aiding fellow Russian Svetlana Kuznetsova's title bid.

Petra Kvitova, a 19-year-old Czech who won her first WTA title in January at Hobart, and US giant-killer Melanie Oudin, two weeks shy of her 18th birthday, became the darlings of Flushing Meadows after their third-round shockers.

Kvitova, ranked 72nd, saved three match points in the 12th game of the final set and eliminated Safina 6-4, 2-6, 7-6 (7/5).