Top seed Novak Djokovic remains on track at the US Open title after defeating Nikolay Davydenko, with a 6-3 6-4 6-2 victory in the third round at Flushing Meadows.
The Serb will next face 22nd seed Alexandr Dolgopolov, after the Ukrainian beat Ivo Karlovic 6-7 (4-7) 6-2 6-4 6-4.
Djokovic was given the prestigious night session slot once again and, while not matching the heights of some of his performances this year, he still had too much for Davydenko.
The Russian, ranked 39th, managed to recover one break in the opening set but not a second, and after saving seven break points his resistance finally broke in game seven of the second set.
Meanwhile, Roger Federer advanced into the fourth round after overcoming a spirited challenge from 27th seed Marin Cilic.
Number three seed Federer got the crucial break at 4-4 in the third set as he defeated the Croat 6-3 4-6 6-4 6-2 to reach the last 16.
Federer, 30, next meets Argentine Juan Monaco, who fought his way past Germany’s Tommy Haas 6-7 (3-7) 6-3 6-2 6-3.
