Tennis:Novak Djokovic is ominously running into form as he brushed past Mardy Fish at Flushing Meadows.
American Fish has been in excellent form during the US hard court circuit this summer, but third seed Djokovic was always in command as he eased to a 6-3 6-4 6-1 win in just one hour and 50 minutes.
"I was serving well and using the court well and overall I am very happy with the way I played," said Djokovic, who came from two sets to one down against Davis Cup team-mate Viktor Troicki in the first round but has not dropped a set since.
"It gives me a lot of confidence. It's great to raise the level of performance towards the end of the tournament. It's been a great couple of years for me in New York (runner-up in 2007, semi-finalist the last two years), so hopefully I can go on."
Fish, who won back-to-back tournaments for the first time in his career earlier this season, said: "It's a little tough to put it into perspective this soon, but it's been a great summer for many reasons.
"I've sort of put myself back into a position where I feel like I belong and I put in a ton of hard work.
"Speaking just of this tournament, I don't think I've played necessarily my best tennis of the summer, but was in a position in the first three rounds of being the favourite.
"In the third round of a slam I haven't been in that situation many times, so it was nice to get through there.
"But Novak played great today. I just didn't execute. I think he certainly had the advantage as far as playing on Arthur Ashe, I haven't played on that court in two years.
"Man, is it different from playing on Louis Armstrong and Grandstand. There's hardly any wind outside and it's windy in there, really windy.
"For him to play every match in there and sort of get used to that I think certainly helped him."
Djokovic will now play Frenchman Gael Monfils, having won all four of their previous meetings.