Quick-fire holds at the moment. Just trying to work each other out in this second set.

Neal Skupski draws applause from Andy Murray as he whips down an ace for a love hold.

Over the one hour and a half mark we go. Approaching midnight in Spain. Rafael Nadal thumps a volley into the body of Neal Skupski and then offers a hand in apology.

The hosts rattle to a quick hold. Tense.

Solid service game from Jamie Murray as he creeps to 30-0. Great Britain think they've won the next point, but Feliciano Lopez keeps it alive and Neal Skupski has to react. He brings in Rafael Nadal, but Murray is there once more and GB hold to love.

Urgh. Off the frame from Rafael Nadal but that sends the ball spinning round Jamie Murray and down the line. The Spaniards almost run into each other on the next point to make it deuce, but then Feliciano Lopez leaps high to crack a volleyed winner down.

Spain take an important hold after facing a break point.

They pile the pressure on Feliciano Lopez, but he punches the ball at Jamie Murray's feet to save the break.

Lopez can't turn Skupski's return on target. Rafa takes his time over the next serve and is handed a time violation... Jamie Murray's return is low and dipping and Lopez steers it into the net. Break point Great Britain.

Image source, Getty Images

A cry of "Yes!" from the British team as Jamie Murray pounces again at the net. 15-15.

Murray swats away an undercooked Lopez lob. Great Britain hold.

Punchy stuff from Neal Skupski. And that is magnificent from Jamie Murray. The Brit goes pirouetting through the Madrid sky to meet a Rafael Nadal return and tickles it along the tape before watching it drop in the tramlines. Brilliant. 30-0.

Miles Maclagan
Former British Davis Cup player on BBC Radio 5 Live Sports Extra

A couple of monster serves there from Lopez – there’s been good pressure from the Brits but no real reward so far.

Spain get over the line. Lopez holds to level up in the second set.

GB won't go away, Skupski and Murray are sticking strings on everything. Deuce.

Image source, Getty Images

Lovely angles from Rafael Nadal, almost cutting the ball in half to steer it away from the British pair at the net. Delightful. 40-30.

A series of sizzling serves from Lopez. Wham, bam... steaming into a 30-0 lead before hoisting a short ball into the air for Neal Skupski to pounce.

No bother. Jamie Murray cleans up for an early hold in the second set.

Feliciano Lopez mishits a return and it loops just long. His lace was undone, maybe that was the excuse... Rafael Nadal looks for the line on his return, Neal Skupski gets a racquet but can't direct his effort on target. 40-15.

Image source, Gett

Penny for your thoughts, Andy?

Brother Jamie Murray gets this set under way as GB rattle their way to 30-0.

Bathroom breaks done. A make-or-break set coming up for Jamie Murray and Neal Skupski.

Jonathan Jurejko
BBC Sport at Caja Mágica

Cracking atmosphere in the Caja Magica. Just as you would expect when the host nation move within a set of the final. The Mexican wave is back out.

Got it!

Spain just too strong in the tie-breaker to take the first set. Rafa Nadal and Feli Lopez bump fists in celebration and relief.