Svetlana Kuznetsova took the US Open title with victory over fellow Russian Elena Dementieva in Saturday's final.
Kuznetsova recovered from losing her first service game with two breaks of her own to take the first set.
And she twice fought back from a break down in the second for a 6-3 7-5 win and her first Grand Slam title.
Kuznetsova becomes the third consecutive Russian Grand Slam winner, following Ana Myskina at the French Open and Maria Sharapova at Wimbledon.
"I am so happy to win this title," said Kuznetsova. "When I won I just put my hands in the air. I was so excited. I went into shock."
Dementieva came into the final on the back of dramatic three-set wins over Amelie Mauresmo and home favourite Jennifer Capriati.
But her suspect serve remained a weakness and Kuznetsova set about attacking it from the outset.
The 19-year-old ninth seed hit 35 winners, most of them on her hugely powerful forehand side, and Dementieva was hanging on for much of the first set.
With victory in sight Kuznetsova started to make more errors inn the second and twice fell a break behind, but each time she responded immediately.
And at 5-5 the pressure on Dementieva became too much, her serve collapsing for the final time as Kuznetsova went on to serve out for the title.
"I wasn't able to play my best tennis today," said Dementieva. "But Svetlana played a great game and deserved to win.
"It's been a great tournament for me. I played some good tennis and I am not that disappointed. She just played better than me.
"I'm very proud that two Russians were in the final. It's a miracle to me that three Russian girls have won Grand Slams in one year."