Agnieszka Radwanska, Polish teenager, shocked the tennis world by ousting US Open defending champion Maria Sharapova with a 6-4, 1-6, 6-2 win in their third round tie at Flushing Meadows.
"I had nothing to lose, just hit every ball, and I did it," Radwanska told the crowd.
"I knew that she hates it if somebody moves when she is serving.
"So I knew I had a chance if I did it and she made so many errors on her second serve."
Sharapova was clearly favoured to coast into the last 16, as she had won her opening two games, both played at night, for the loss of just two games and had spent just 101 minutes on court.
The Russian glamour girl got off to a smooth start, putting the 18-year-old Pole on the back foot with some powerful groundstrokes and breaking her serve to lead 2-1 in the opening set.
However Radwanska, a top world junior last year playing in just her sixth Grand Slam tournament, refused to be intimidated and she broke back immediately to level at 2-2.
In the blustery conditions Sharapova started to wobble on her serve and Radwanska broke again to lead 5-3 before Sharapova broke back immediately.
But once again the Russian struggled on her serve and a double fault gave the Pole set point which she converted with a crisp backhand down the line.
Radwanska took a 1-0 lead in the second set but Sharapova then clicked into gear and won the next eight games to take the second set 6-1 and a 2-0 lead in the final set.
"I had nothing to lose, just hit every ball, and I did it."
Agnieszka Radwanska, US Open 30th seed
It looked as though the defending champ was back in control, but another sloppy service game allowed the teenager to claw her way back into the game.
Radwanska levelled at 2-2 and then stunned Sharapova and the crowd by breaking again thanks to an 11th double fault from the Russian.
The defending champion was on the ropes and Radwanska provided the coup de grace by converting her fourth break point for a 5-2 lead thanks to a Sharapova forehand drive that ended at the bottom of the net.
The Pole then served out confidently to stun Sharapova and move into the last 16.
"It wasn't nice losing eight games in a row, but I had nothing to lose by hitting every ball and I did it," Radwanska said.
The 30th seed will play either Shahar Peer of Israel or Nicole Vaidisova of the Czech Republic for a place in the quarter-finals.