Caroline Wozniacki stunned Maria Sharapova to reach the quarter-finals of the US Open.
Fourth seed David Ferrer became the first top-10 man to go out of the US Open in a third-round loss to Gilles Simon.
Jo-Wilfried Tsonga does not feel Andy Murray is the player he was and rivals are less fearful about facing the Scot.
Andy Murray booked his place in the fourth round of the US Open following a 6-1 7-5 4-6 6-2 win over Andrey Kuznetsov.
Novak Djokovic continued to look the man to beat at the US Open as he cruised into the fourth round.
Serena Williams made it a hat-trick of victories over fellow Americans to move into the fourth round of the US Open.
Petra Kvitova is out of the US Open after a shock third-round loss to qualifier Aleksandra Krunic.
Seventh seed Eugenie Bouchard survived another scrap to beat Barbora Zahlavova Strycova 6-2 6-7 (2/7) 6-4.
Roger Federer nullified the big serving of Australian Sam Groth to move into the third round of the US Open.
Maria Sharapova overcame Sabine Lisicki to set up a tasty fourth-round clash with Caroline Wozniacki at the US Open.