NEW YORK -- As a butterfly fluttered its wings at the net, Kei Nishikori was the one floating and stinging Andy Murray like a bee.Murray was in the midst of a US Open meltdown, after a loud noise from the malfunctioning PA system had given Nishikori a reprieve during a break-point rally in the fourth set.The man whom Flushing Meadows centerpiece stadium is named after used to relax his mind during changeovers by meditating; Murray, raging against the chair umpire for halting play, looked like he could have benefited from taking a leaf out of Arthur Ashes book.He never seemed to shake off the incident; Murray took a swipe at the butterfly with his racket and appeared to injure it, while his US Open title hopes were dealt a fatal blow.I have not let anyone down, a weary Murray told a media conference after his 1-6, 6-4, 4-6, 6-1, 7-5 quarterfinal defeat. I tried my best. I fought as hard as I could with what I had. I didnt let anyone down. Certainly not myself. I pushed myself as hard as I could over the last few months, and Im very proud of how I have done.If someone had offered me the summer that I have had before Wimbledon, I probably would have signed for that.Murray was more motivated than ever coming into the US Open; he had lost just one match since reuniting with Ivan Lendl on the eve of Queens; he had reached the finals of his last seven tournaments; he had won a third major title at Wimbledon, and a second straight Olympic gold medal in Rio.I feel ready, he had told ESPNs Tom Rinaldi before the tournament, where he was bidding to become just the fourth man in the Open Era to reach all four major finals in a calendar year.Since becoming a father I want to make the most of these last few years before its all done. The US Open is a tough, tough one to win at the end of the year. Ive played great the last seven or eight tournaments but to get to No. 1 in the world it takes a great year. Its something Ive never been able to do before.Novak Djokovics position atop the ATP rankings is now unlikely to be threatened in 2016, nor is his grip on the US Open title; there is a nagging feeling Murray missed his shot, here.This seemed like the Scots time -- Djokovic was dealing with wrist and elbow injuries, as well as personal problems that contributed to his shocking third-round exit at Wimbledon.It still would have been a tough task to overcome the fresher Serbian, who has only had to complete two matches here due to opponents pulling out and retiring with injuries, but Murray was the form man.There were early signs, though, that a punishing schedule had taken its toll on Murrays body. He was flat in a third-round win against Paolo Lorenzi, needing four sets and 3 hours, 17 minutes to put away the Italian journeyman.A round-of-16 thrashing of Grigor Dimitrov may have been misleading -- John McEnroe labelled the Bulgarians performance horrible in a 6-1, 6-2, 6-2 demolition job.The Scot also admitted after the match that he had been struggling to sleep in New York, perhaps a symptom of his punishing, globe-trotting schedule the last few months which took him from Rio to New York via Cincinnati in the space of less than three weeks.Ivan Lendl and his assistant coach, Jamie Delgado, had to give Murray a pep talk after the win over Lorenzi and told him to give it everything he had for the rest of the tournament, with a well-earned rest on the horizon.A burned-out Murray will have to wait a little longer for that break; his immediate focus will turn to a tricky Davis Cup semifinal tie against Argentina in Glasgow, with a game Juan Martin del Potro presenting a huge roadblock to Britains chances of retaining their title.But for now, it is a case of clearing his mind.Asking me right now is pointless, he said. Im not going to have the best perspective on things right this minute, but after a few days away and stuff, I would imagine Id be very happy with how I have done and learn from this match today and the summer as a whole, because its been tough. Its been a hard summer.And, yeah, Im happy with how its gone. Theres just a few things I could do differently next time. Discount Nike Vapormax . -- There were so many positives from the Orlando Magics first victory of the season that it was hard for coach Jacque Vaughn to stop praising his players. Authentic Vapormax Shoes . But now that hes in the NHL, the Calgary Flames centre showed big improvement in that department by scoring the winner in the eighth round of a 5-4 shootout victory over the Winnipeg Jets on Monday. https://www.cheapvapormaxoutlet.com/ . 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Rivers threw a 22-yard touchdown pass to rookie Keenan Allen and Nick Novak kicked four field goals to give the Chargers a 19-9 victory against the Colts on Monday night.The rivalry between Carlos Sainz and Max Verstappen has the potential to become more intense than that of Nico Rosberg and Lewis Hamilton, says Sky Sports F1 pundit Martin Brundle. Sainz and Verstappen eventually finished the Australian GP in ninth and 10th respectively but the teenager was furious with both Toro Rosso and his team-mate at Albert Park.Verstappen, last seasons Rookie of the Year, felt he was held up by Sainz on several occasions - most notably behind Jolyon Palmer in the Renault. Both youngsters have been tipped as future superstars and, as Rosberg and Hamilton have proved during their time at Mercedes, a spiky relationship off the track makes for compelling viewing.The squabble between these two emerging stars in Formula 1 is going to be like Hamilton and Rosberg - but probably even more intense, noted Brundle during commentary on Sunday. 2016 Australian GP ratingsVerstappen, fifth on the grid, started the grand prix strongly, keeping Hamilton at bay during his first stint. But strategy calls as well as a slow pitstop halted his progress, and the real fireworks came over team radio during his pursuit of Sainz and Palmer in the battle for ninth.Can I try to get past? he said in one of many expletive-laden outbursts. Let me drive, this takes too long.Come on, we have to do something! Its a joke. The Sky Sports F1 pundits react to some heated radio messages from Toro Rossos Max Verstappen and say that he needs to keep calm to progress.dddddddddddd While Sainz was told to push by Toro Rosso, Verstappen believes his team should have done more to help him secure many more points in Melbourne. The Dutchman was also angered by delays from his pit crew; after Sainz was called in first, the tyres were not ready for Verstappen upon his second stop.He urged his team to learn lessons from Sundays race, but also said he doesnt care what they choose to do regarding place-swapping with his Spanish team-mate in the future.Australian GP conclusionsNormally I should be miles ahead, Verstappen said, as reported by Motorsport. It should be fine.I knew I was much faster today. Im not worried that the pace is not there. We just had a bad pitstop and then when you come out you are behind. To be honest for me its fine. I feel I have everything under control. I dont feel the pressure of him. Im focussing ahead, thats my competition.Sainz, meanwhile, insists he doesnt have an issue with the 18-year-old but that he did not miss any overtaking moves during the race.I overtook eight or ten cars today on a track, he said.Sky F1s Damon Hill also claimed Verstappens complaining was misguided, adding: That was the first sign of immaturity weve seen from Max.Dont miss the F1 Report for all the reaction and analysis from the Australian GP. Natalie Pinkham is joined by David Brabham and former McLaren mechanic Marc Priestley on Wednesday at 8:30pm on Sky Sports F1. Every race live in 2016 Sky Sports F1 brings you every race live in 2016. Fast and easy online upgrade - click here. Also See: Australian GP conclusions Australian GP driver ratings ' ' '