Murray directs a few tennis balls into the crowd before leaving the court, which means it's time for us to wrap things up. If you want to read the match report of Murray's match click here. All the latest results are on our, well, results page. Thanks for joining us. 

Wednesday's order of play, external has been announced and the night matches (from 00:00 BST) will involve Venus Williams and Novak Djokovic. 

Arthur Ashe Stadium

Madison Keys (USA) v Tereza Smitkova 

Marin Cilic (Cro) v Evgeny Donskoy (Rus)

Serena Williams (USA) v Kiki Bertens (Ned)

Irina Falconi (USA) v Venus Williams (USA)

Novak Djokovic (SRB) V Andreas Haider-Maurer

"Obviously the beginning of the fourth set was important because I managed to get momentum back. I felt like I served well for the most part," says Murray, who will next play France's Adrian Mannarino. 

"It was tough, I had to do a lot of defending tonight, a lot of running in humid conditions. 

"He's unpredictable and he can play all of the shots, he serves well, it was a very tricky match and I just fought hard, mixed it up and managed to get through."

Kyrgios still capable of those showstopping winners, but those sorts of shots rarely win you matches, it takes a little more than that - patience, clever game management, consistency. 

Murray with a match point. Kyrgios forehand long. And Murray progresses to the second round. 

Murray has responded to losing the third set like you'd expect the third best player in the world to. When Kyrgios went for a break after the third set he would've thought he had a chance, but within two games of the fourth he was as good as out of it. 

"Great preparation, really good," Kyrgios shouts in Lleyton Hewitt's direction. Murray marches on, an ace to move to within a game of victory. 

Kerpow! Murray upping the ante, a venomous backhand winner down the line brings up two break points. Kyrgios lasers an ace down the 'T' to save one but surrenders with a whimper with a double fault and some members of the crowd hiss. 

The former champ miscues a forehand and it's the first time we've seen the Scot allow his frustrations to boil over. For most of the match it's been Kyrgios enjoying monologues on the baseline. Kyrgios, though, messes up, he has Murray on the backfoot but casually floats a forehand over the line. Hold to 30 for the Scot. 

Another drop shot from Kyrgios and it's the wrong option, into the net it goes and Murray levels at 30-30. Kyrgios with a cracker of a serve followed by a peachy forehand down the line and the Aussie has won his first game. 

Image source, Getty Images

A beautifully disguised drop shot from Kyrgios bamboozles Murray, the Aussie looking like he was preparing for a bulldozer of a backhand not a feather-shot drop shot. 15-15. No dramas to talk of, Murray serving out to consolidate his break. Kyrgios winning just the one point so far in this set. 

Kyrgios caring little about those on the other side of the world who need some shut eye but can't take their eyes away from this match. Lleyton Hewitt nodding in his protege's direction as he gets ready to start the fourth set. 

Murray ups the ante, kissing the paint with a forehand down the line - three break points. A sloppy drop shot from Kyrgios which bounces into the tramlines and Murray coming off the ropes and counter-punching.

Image source, Getty Images

Murray is broken to love. A more composed and careful Kyrgios wins the third set and could there be a few more twists in this match? 

Kyrgios swinging freely, hitting the line, and two huge forehands sets him up nicely at 0-30. Murray helpless, simply watching the ball fizz by. Double fault Murray. Three set points Kyrgios. 

The servers in control in this set and Kyrgios opting for the solid rather than the spectacular and getting his rewards. A hold to love and Murray must hold to stay in this set. 

Image source, Getty Images

A trouble-free hold for Murray. Kyrgios nicks one point as Murray's forehand drifts long - but he sees of Kyrgios for a hold to 15. 

Will Murray pounce? He doesn't get a chance. Sharp-shooting from Kyrgios opens a 40-15 lead...and eventually he closes out, a forehand winner for a hold to 30. 

The Murray serve hitting the target more often than not, an ace eases him to 30-15, but a double fault - his first of the match - allows Kyrgios back in the game at 40-30. Crosscourt backhand winner Murray. Game over. 

Image source, Getty Images

Interesting choice of socks by the young players at the US Open. Bright pink for Borna Coric on Monday, while Kyrgios has opted for luminous yellow. We're back in the late 80s and dancing in the Hacienda. Anyway, on the court, Kyrgios has held to love. 

Image source, Getty Images