Nearly two hours have been played and Murray, for the majority of the match, has performed solidly. No dramas, no major hiccups. Two aces from Murray as he holds to love and levels. 

And just when there was some light for Kyrgios to walk into... the skies darken again.. Murray with a fabulous passing shot to bring up three break back points, and the Scot simply needs the one. Ruthless from Murray. 

Kyrgios getting his rewards on the Murray second serve, three clean winners on the Scot's slower boomers. Fourth break point Kyrgios - Murray forehand into the net! The Aussie finally takes his opportunity. 

Second break point Kyrgios and it's a second break point saved, the Aussie's backhand directing the ball into the tape. Kyrgios' response? To throw his racquet onto the ground. No damage done, though. 

Kyrgios stepping in on the serve, a winning backhand for a third break point - Kyrigos' 12th break point of the match - but the Aussie gambles on the forehand - and it sails long. Deuce. Advantage. Deuce. 

Rat-a-tat-tat. Quick-hitting, big-hitting. Murray 30-0 up - but he slaps a forehand into the net on the next point. It looks hot and sticky on Ashe, Murray sweating like a man wearing a duffle coat in a sauna. 

Kyrgios levels to 30-30, sometimes even a defender of Murray's caliber can't handle Kyrgios' crackerjack shots. 

Super rally on the next point... from side to side... tension increases with every shot... and it's Murray who folds, ending a 26-shot rally by netting. Break point Kyrgios - but Murray produces a perfectly-timed ace. Deuce. 

Murray leaves the court for what we presume is a toilet break, while Kyrgios sinks further and further into his chair, his neck disappearing into his shoulders, if that's possible. 

But eventually the third set gets under way. 30-30 makes it interesting. A Murray lob, which earns him a break point, makes it very interesting indeed. Murray drags a forehand into the tramlines. Deuce. 

Murray long with a forehand, then into the net with a backhand. Opportunity gone. 

While Kyrgios wastes energy talking to himself, Andy Murray gathers a 40-0 advantage and secures an easy-peasy hold, Kyrgios - who has yet to win a set against the Scot - netting.

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Quick-fire serving from Kyrgios and the young Australian holds to 15, which means Murray will serve out for the set. 

A backhand volley down the line from Murray returns the game to deuce, and once again Kyrgios loses grip of his racquet. 

Plenty of chances coming the Aussie's way... but he's only grabbed one of his last eight break points. 

Fourth break point Kyrgios. Fourth break point saved. Fantastic defending from the Scot at the net, a fine backhand volley turning the momentum. 

Through-the-legs volley from Kyrgios for some reason when he could have opted for a simple forehand and it bounces long. Advantage Murray. The pair go back and forth from deuce to advantage. Kyrgios going for the extravagant when the simple would do - another rash forehand, into the tape, and Murray is nearly two sets up. 

Murray controlling this match, but Kyrgios allowing him to do so. The Aussie has a number of tricks in his bag, but he doesn't quite know how to use his weapons effectively. The 20-year-old constantly talking to himself in between points. He has two break points, but he allows them to slip through his fingers. 

Deuce. Super-duper forehand from Kyrgios, as if the weight of a thousand bears were behind it, and it earns him a third break point. 

Kyrgios slumped again in his chair during the changeover, the body language of a teenager whose mum has confiscated his bottle of hooch before the big house party.  

Two break points Murray. A backhand into the tramlines from Kyrgios and the Aussie, shoulders slumped, shakes his head.

One break point saved by Murray... On the next point Kyrgios' eyes widen as the court opens up, but he overcooks a forehand down the line and Murray has dragged this game to deuce. 

Kyrgios collects a third break point, but the Murray first serve - big and to the wings - gets the Scot out of trouble. Deuce once more. 

A ninth ace from Murray, advantage; a faulty Kyrgios return on the next point and what's that sound? The Aussie's chance whistling in the wind. 

Swashbuckling shots from Kyrgios and the Aussie gets his rewards, skipping 15-30 ahead. Murray nets a simple forehand after Kyrgios takes control after a weak Murray second serve. Two break points Kyrgios...

A woman in the crowd is showing her friend something on her smartphone and they giggle heartily. Perhaps they should share the joke with Kyrgios because the Aussie doesn't seem to be enjoying himself on Ashe. 

Murray with a break point - Kyrigos saves with a forehand down the line which Murray pushes wide. Deuce. A brilliant rally ensues... from side to side they go until Kyrgios moves forward... Murray with a flicked crosscourt forehand which is called out but actually kissed the tramline. Dreamy. 

Break point Murray. A second break point saved with a howitzer serve out wide. Big-hitting at big moments from Kyrgios and we're level. 

Another drop shot from Kyrgios but panther-like speed from the Scot at the net. Murray can gobble them up all night long. (It's watching Murray pounce on iffy drop shots which inspired Lionel Richie to write one of his most famous hits... Little known fact that.)

Kyrgios attempts a forehand and he loses control of his racquet, his weapon flying high before dropping onto the court. The Aussie an entertainer is so many ways. 

It's a straightforward hold for Murray, who concludes with a delicious drop shot which Kyrgios can't fetch. 

Kyrgios looks like a man who would rather be somewhere else, but he still manages a comfortable hold to level with Murray. The missed opportunities of the previous set still playing on his mind. 

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