Top seed Novak Djokovic is happy with his form after beating Sam Querry of USA in the third round; Murray stretched again
New York: Novak Djokovic continued to look the man to beat at the US Open as he cruised into the fourth round.
World No 1 Novak Djokovic celebrates his win over American Sam Querrey at the US Open on Saturday. Pic/AFP
Djokovic has not been tested in any of his matches so far and needed just an hour and 25 minutes to dispatch American Sam Querrey 6-3, 6-2, 6-2 on Sunday.
Querrey's serve is his biggest asset but Djokovic was all over it, the American winning just 23 per cent of points on his second serve and only 57 per cent on his first.
Coming into the tournament, Djokovic admitted he did not not know how being away from his pregnant wife would affect him but any rivals looking for a lack of focus will have been sorely disappointed.
The Serbian struggled badly in the warm-up tournaments in Toronto and Cincinnati but is feeling mentally refreshed in New York after a draining summer that included winning Wimbledon and getting married.
"It was just overwhelming moments," he said. "Going back to the clay-court season, I had an injury with the wrist that I didn't know how long it's going to stay there, if it's going to be an obstacle for me to play (the French Open), and that took a lot of energy from me emotionally.
Then Roland Garros, losing another final against (Rafael) Nadal and then bouncing back and winning Wimbledon the way I wanted and becoming number one and then a few days later a wedding.
"So these things together are very overwhelming in every way. Of course, it gave me a lot of positive energy, but it was very demanding.
"I tried to enjoy that and worked pretty well before the lead-up tournaments to the US Open. I was physically ready, but obviously emotionally I was still not out there.
"My game is peaking at the right time, at the right tournament. This is where I want to play my best tennis."
Meanwhile, Andy Murray was content to have engineered a happy ending to another slightly tortuous journey in Louis Armstrong Stadium.
The eighth seed looked to be strolling through to the fourth round of the US Open but contrived to lose the third set to Russian Andrey Kuznetsov before recovering to win 6-1, 7-5, 4-6, 6-2.
Walkover for Wawrinka
Third seeded Stan Wawrinka, the Australian Open champion, reached the fourth round without hitting a ball when Slovenian opponent Blaz Kavcic withdrew with a right foot injury.
That took the number of retirements and walkovers at this year's US Open to 10 in the men's event and two in the women's.
Philipp Kholschreiber beat John Isner 7-6 (7/4), 4-6, 7-6 (7/2), 7-6 (7/4) on Saturday to end US interest in the men's draw. It's the third straight year that Kohlschreiber has eliminated Isner at the same stage.
Novak Djokovic marched into the US Open fourth round on Saturday before happily being upstaged by a precocious, nine-year-old pop singer.
Djokovic had defeated Sam Querrey 6-3, 6-2, 6-2 and then batted off a series of routine post-match questions from the media. But he then invited Zia Uehling, the daughter of a family friend, onto the platform to perform her impromptu act.
"She's a prodigy, a future star, and this is a very valuable experience for her," said Djokovic. "In a few years time she will be a big star and she'll be up on this stage."
Zia — "I have written five songs....and I have about two books that I'm working on right now" — then rattled off one of her own compositions to the watching media.
"I will sing an original song I wrote called African Sun. I wrote this song to give hope to the children in Africa. I never really play without my guitar, so I'll give it a try."
Zia is the daughter of Peter Uehling, a former pro and close friend of Djokovic since the world number one's teenage years.