*Murray 7-5 6-6 (4-4) Nishikoripublished at 15:27
Nishikori back in it! All over the court, Murray out of position and pressured into netting.
Great Britain beat Japan 3-1 in Birmingham
Andy Murray beats Kei Nishikori 7-5 7-6 (8-6) 3-6 4-6 6-3
GB will play Serbia or Kazakhstan in July's quarter-final
Stephan Shemilt
Nishikori back in it! All over the court, Murray out of position and pressured into netting.
Andrew Castle
BBC Sport tennis commentator
"This is where playing at home really can make a difference in Davis Cup."
Careful, Andy. A return long. Three straight points to Nishikori. Murray has serve to get back on the horse...
And another. Change of ends, but Murray still in charge.
John Lloyd
Former Davis Cup finalist on BBC One
"What a passage of play this is from Murray. The backhand, he just doesn’t look like he is going to miss"
The first mistake from Murray, a dump into the net.
Oh yes! Murray screaming in delight. Backhand after backhand nailed, Nishikori being steamrollered.
On the charge now! Murray passes the advancing Nishikori with a cross-court forehand.
Mini-break Murray, getting the better of a cross-court exchange with a thrusting back hand.
Murray takes the first point, putting away a forehand.
Tie-break time. The Japanese wins four straight points when he needs it. A huge moment in this match coming up...
A blur of red and blue all over Birmingham, Nishikori eventually finding a way past, then Murray going long. Two set points gone, the air blasted in disgust.
Andrew Castle
BBC Sport tennis commentator
"Is this the moment Murray pushes ahead?"
Is Murray just finding that gear when he needs it? Just cranking it up when the big moment comes? Error forced from Nishikori, then a backhand return that screams by the man in red. Two set points...
#bbctennis
Ben Silveston: Grand Slams happen every year, why can't the Davis Cup? Seems a strange decision in some ways.
Eileen: It would probably allow for more commitment from the top players if it was every 2 years.
Liz Henwood: I adore the Davis Cup - totally different mad atmosphere & set up to 'normal' tennis tournaments - so much fun! Love it!
Murray looking stronger, mainly because his first serve is more reliable and more of a weapon. Nishikori waits in front of us, puffing out his cheeks in anticipation of another examination. Even when the Japanese gets into the rally, Murray somehow gets to a backhand when he has no right, forcing Nishikori to go wide. Hold to 15, Nishikori back under the pump.
You just feel that Murray has a sniff every time he gets a look at the Nishikori second serve. So it proves for 15-15, but that is followed by a wide forehand and some Murray chuntering for 30-15. Back-and-forth, near-silence when Nishikori finally puts away an overhead for the game.
John Lloyd
Former Davis Cup finalist on BBC One
"It makes it fun tennis to watch but I don’t know how much it is to play because neither player can put the ball away."
You could close your eyes and know what is happening in this match from the noise of the crowd. Polite applause - Nishikori's point. Roar - Murray's point. Roof comes off - Murray wins a big point. From 15-30, Murray hammers a skin-saving ace, then finds the most delicate drop shot for game point. Big hold completed, Nishikori will have to serve to stay in the second set.
Andrew Castle
BBC Sport tennis commentator
"No doubt both players are fatigued here. You have to know when to give it all and time when to give your best efforts."