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.
David Ferrer got a walkover into the third round of the US Open when opponent Bernard Tomic pulled out with hip problems.
Mirjana Lucic-Baroni upset second seed Simona Halep to reach the fourth round of a grand slam for the first time in 15 years.
Venus Williams served for the match against Sara Errani before losing a bizarre contest 6-0 0-6 7-6 (7/5)