"Finishing matches at three in the morning isn't good for anyone involved".
A weeping Andy Murray after his match finished in the early hours.
"I don't think I should be put in a position like that", Murray said. It's not good for fans, TV. The 19-year-old is projected to soar past his previous career-best world ranking of 68 and could make the top 50.
"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". But it's a very hard position to be in when you're coming back from such a long lay-off.
The extraordinarily late finish to his match with Copil gave him little time to recover for his quarter-final and in the aftermath he voiced his annoyance at the scheduling, hinting that he may withdraw to preserve his exhausted body.
The British star said he was unlikely to finish post-match conditioning and get to sleep before 5:30am, ahead of a scheduled quarter-final against 19-year-old Australian Alex De Minaur. Enter the Citi Open in Washington D.C., in which Murray started a match at midnight that he needed to play until 3 a.m.to win.
O'Brien said: "I hope that Andy really takes into consideration this role in his sport and as a global role model to guys and girls on the tour and kids around the world that, when things are hard and tough and the conditions aren't great, it's not OK to just give up". At the very least, he doesn't feel it should have to be a decision he has to make. "I'm not sure how well I'll recover from that". The top-seeded German is looking to become the first back-to-back victor of the hard-court U.S. Open tuneup since Juan Martin del Potro in 2008 and 2009.
He broke down in tears after completing his last-16 victory over Romanian Marius Copil at 03:02 local time on Friday.
After shaking hands with Copil and acknowledging the understandably sparse crowd, Murray sat down in his chair and sobbed repeatedly into his towel.
After the match, a shattered-looking Murray wept into a towel for several minutes, calling it, "just the emotions coming at the end of an extremely long day and a long match", Murray said.
Norrie won almost three-quarters of his first serve points as he dismissed the fourth seed and world number 25 to reach his second successive ATP Tour semi-final.