Roberto Bautista Agut needs just the one. He breaks to love after Felix Auger-Aliassime prods his forehand long. Momentum swings back in the Spaniard's favour.

Image source, EPA

A wrong-footing deceptive forehand from the Spaniard. 0-40. Three break points...

This is tense. Long from Felix Auger-Aliassime off his forehand side, and then Roberto Bautista Agut whips a passing forehand winner beyond him.

0-30.

Roberto Bautista Agut is having a right rant at the umpire. He's not happy, thinks the last point should have been replayed - he did swing at it and stuck strings on the ball. Correct call.

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

Auger-Aliassime has come out full of energy. He has a big game but even though he has fallen behind he hasn't let the energy diminish.

Felix Auger-Aliassime can't believe it. He fires long, but is challenging. It's in! That's kissed the line and he breaks back in dramatic fashion.

The first is saved in nonchalant fashion! Cool as you like from the home player, dicing over a teasing drop shot. 30-40. One break back point to go.

Touch of nerves creeping into the Spaniard's game? A double fault, but he responds with a wrist-rattling serve that Felix Auger-Aliassime jabs long. 15-30.

Hold that thought... Bautista Agut goes long. Two break back points.

Another corking forehand winner from the teenager. Thunderous. 0-15.

That's better from Felix Auger-Aliassime, opening up the court and spraying a forehand into the space vacated by Roberto Bautista Agut. He holds.

Big serve, and it saves the break. Deuce.

Bautista Agut is targeting the Canadian's forehand, and with success. Auger-Aliassime overcooks another on his weaker side for 30-30 and then throws down another double.

Break point Spain.

Long way back for Felix Auger-Aliassime - he's a set and a break down.

That pocket of maple leaf t-shirt-sporting Canadian fans is looking a tad anxious.

Double fault from their charge. 15-15.

Another loose forehand from Felix Auger-Aliassime and this service game suddenly turns on its head. Roberto Bautista Agut is doing damage on that side. Spain hold.

Not taken. The teenager's wayward forehand was on its way back to Montreal there.

Deuce.

Big, big forehand winner down the line from Felix Auger-Aliassime. He fights back to deuce.

And then Roberto Bautista Agut slings a loose volley long. Chance to break back immediately for Canada...

The Spaniard just crunches through the gears to generate a powerful forehand that's too hot for Felix Auger-Aliassime to handle. 40-15.

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

Really solid. Bautista Agut is well able to hold this level of concentration and intensity. He's had a bit of a helping hand with a couple of double faults and misses from the ground. Auger-Aliassime's mountain just got a bit higher.

Roberto Bautista Agut is playing some lovely tennis, almost slicing the fluff in half with a volley that drops dead on the other side of the net. 15-0.

This time Spain get it!

Felix Auger-Aliassime scuttles forward but punches long off his forehand side.

Huge break for the hosts.

Image source, Getty Images