He has also withdrawn from next week's Rogers Cup in order to recover, Xinhua news agency reported. Murray's withdrawal, announced earlier on Friday, gave Australia's Alex de Minaur a free pass to the semi-finals where he will meet the victor of Andrey Rublev and American Denis Kudler.
It has been a tortuous year for the 31-year-old, watching helplessly from the treatment table as he plummeted down the rankings while his hip condition worsened to the extent that surgery was required in January. Zverev joked after advancing, "I think I'm the only one that's allowed to buy a drink in the US, right?"
Klopp reveals concern about Liverpool defence ahead of league’s opening match
One sticking point is that, unlike Chelsea, Lyon can offer Champions League football to Fekir if he stays at the Groupama Stadium. Klopp is looking to assemble a team capable of being one of the main challengers for the Premier League title next season.
Murray told reporters at the tournament: "I don't think it's reasonable and I'm disappointed in that". When play resumed, Zverev took a second break thanks to a series of errors by Nishikori and closed out the match. "It's not good. And it's basically like playing two matches in a day".
"I'm exhausted after playing so much over the last four days, having not competed on the hard courts for 18 months", said Murray, whose three matches each lasted more than 2 1/2 hours.
The Scot even suggested he may pull out rather than risk putting his body through such an ordeal so soon in his comeback after taking three hours and two minutes to defeat Romanian Copil 6-7 (5/7) 6-3 7-6 (7/4).
Murray worked deep into the night to get past 93rd-ranked Marius Copil of Romania 6-7 (5), 6-3, 7-6 (4) in a match that finished in the wee hours in front of 100 or so spectators after beginning at midnight as Thursday turned to Friday.
NASA names crews and dates for first USA commercial missions
Williams previously logged 321 days in orbit on two stays aboard the space station, most recently returning to the Earth in 2012. When you think about who's in charge of cutting-edge spaceflight in 2018, SpaceX is probably the first name that comes to mind.
"I've played quite a few matches this week in Washington and I need to be smart with my rest and recovery as I come back from injury", Murray said. "I'm not sure how well I'll recover from that".
An emotional Murray was in tears after the victory and said afterwards he thought it was "unreasonable" to ask a player to finish a match so late and then be expected to play again the following day.
"I do understand 3 a.m.is very hard for everyone", O'Brien said.
Asked after beating Copil how his body is holding up, Murray replied: "It doesn't feel great, just now".
Zaha tells Crystal Palace pals he wants Chelsea move
Wilfried Zaha played a starring role in Crystal Palace's survival last season, with nine goals and five assists. Zaha wants to remain in London and sees Chelsea as the ideal club to continue his resurgence.