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By Jonathan Jurejko
BBC Sport at Flushing Meadows
After stopping as defeat loomed in an match due to injury from Swiss seed Stan Wawrinka, defending champion Novak Djokovic is from this US Open.
After a fault left him two spots and a break down, djokovic retired with a shoulder problem moments.
Loud boos greeted the Serb’s conclusion, with much more as he walked off court heard.
“I am sorry for the audience. They arrived to find a full game but it was not to be,” said world number one Djokovic.
When Djokovic determined he could not continue, three-time Grand Slam champion Wawrinka had mastered the last-16 competition in a boisterous setting at Arthur Ashe Stadium, making a display reminiscent of his very best to direct.
34, wawrinka, will play fifth seed Daniil Medvedev in the quarter-finals.
Djokovic has been the hot favourite to retain his title in Flushing Meadows and acquire a 17th Grand Slam, that will move him closer to Roger Federer (20) and Rafael Nadal (18) in the race to become termed the best men’s player of all time.
However he was hampered through the championship with a left shoulder injury, which he states has left him “continuous pain for a few weeks”.
Djokovic particularly struggled on Wednesday throughout his second-round match against Argentina’s Juan Ignacio Londero, requiring treatment that was intense three times before coming through in straight sets.
There had been speculation he might withdraw because of the issue, simply to show signs of the issue in a win on Friday.
But Djokovic reported the level of the pain.
“It is quite frustrating. Of course it hurts that I needed to retire,” explained the Serb.
“Some days the pain has been higher, some days with less intensity. I took different stuff to kill the pain immediately. Sometimes it works, sometimes it doesn’t.
“You just know when you know, when you feel like you’re not able to reach the shot any more.”
Although Wawrinka stated he had been amazed by negativity the Serb did not want to explore the crowd’s reaction to his premature departure.
“He’s an wonderful winner,” added the Swiss. “If he has to retire, it is not the best for a tennis player to have to leave the court like that.”
Djokovic suggested he expects to regain fitness for the Asia leg of the ATP Tour and the season’s final months.
“It’s no secret that I have desire and a goal to achieve the most Grand Slams, and hit Roger’s album,” he added.
“At precisely exactly the same time, it’s a long road ahead ideally for me. I am hoping I will play for many more years. I am planning to. I don’t find a conclusion supporting the corner in any way.”
The withdrawal of djokovic failed to take the shine from Wawrinka, who made his victory since beating Britain’s Andy Murray world number one, in the 2017 Open semi-finals.
Shortly after that run, the career of Wawrinka postponed because of a knee injury, which left him needing 2 surgeries.
It has been a gradual climb back up the rankings three, however he could still cause problems for the – whatever their bodily condition – in a powerful screen.
Wawrinka came out firing from the beginning, piercing Djokovic’s famed defence using blistering groundstrokes as he broke 3-2 and producing thumping aces to stave off a break point within the next game in his way to clinching the opener.
Wawrinka had beaten on Djokovic few times – including their meeting from the 2016 final at Flushing Meadows – having dropped the opening set them in each.
This proved distinct, despite Djokovic coming out fighting by holding to appreciate at the very first game of the second set, then breaking to obtain an early advantage.
Wawrinka, backed with a vociferous New York crowd, was soon level after breaking back in a critical seventh match in which Djokovic coughed up two double defects serving for a 5-2 lead, along with the Swiss landed a gorgeous one-handed backhand down the line which left a few fans climbing to their feet in esteem.
Djokovic began to look rattled from the air and the harm, creating shots as he tried to react, letting Wawrinka the other break and the chance to serve out for a advantage.
Treatment in the changeover was a last-ditch effort by Djokovic to improve his physical – and mental – condition, but it didn’t prove successful and he stopped a couple of minutes.
“I am sorry that he had to retire to complete the match like this, but for me, most important is the way I am playing, how I am shifting,” Wawrinka said.
“The longer the game was going, the better I had been playing. I hit the ball. I was feeling good on court”
Russell Fuller, BBC tennis correspondent
Wawrinka was in rampant form. He depriving us of this guy who, before knee surgery, had won three Grand Slam titles and pummeled the ball.
Djokovic was, nevertheless subdued. He appeared to be observing events, rather than bothering them.
He knows if he could have completed the match, yet to leave the courtroom with boos ringing in his ears turned into a harsh send-off to get a Grand Slam champion.
The chances on Federer and Nadal will shorten further. But maybe we need to look away from the top three to get a champion.
Wawrinka might be 34, but he can be exceedingly tricky to stop, if he reaches the next week of a Grand Slam.
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