The defending singles champions are Roger Federer of Switzerland and Svetlana Kuznetsova of Russia , who won their first United States Open titles by defeating Lleyton Hewitt of Australia and Elena Dementieva of Russia .
Roger Federer /people/person/nationality Switzerland
Lleyton Hewitt /people/person/nationality Australia
DT VBG NNS NNS VBP NNP NNP IN NNP CC NNP NNP IN NNP , WP VBD PRP$ JJ NNP NNPS VB NNS IN VBG NNP NNP IN NNP CC NNP NNP IN NNP .
Roger Federer
PERSON
Switzerland
LOCATION
/people/person/nationality
Lleyton Hewitt
PERSON
Australia
LOCATION
/people/person/nationality