Eugenie Bouchard
Former Canadian tennis player on BBC Two

The atmosphere is amazing out here. The crowd is absolutely loving this, they just want to stay here all night long. The sound of the crowd is just being amplified by the roof being closed. You can just feel the tension and the importance of this moment, and the crowd is eating it up.

You do sense that Matteo Berrettini has just been growing in confidence as these last couple of sets have unfolded. Tennis is a sport where you play better with confidence, it is such a vital piece of the game.

We've just ticked over the three hour mark as the fifth set gets under way.

It's all-or-nothing now. Will Matteo Berrettini complete the turnaround? Or can Grigor Dimitrov find a way back into this match?

Dimitrov begins the set with a pretty routine hold to 15.

Tim Henman
Former British number one on BBC Two

That was a brilliant performance from Matteo Berrettini at the end of the fourth set. He was down 3-4 and his back was against the wall, but that is most definitely when he produced some of his best tennis of the match.

Kyle Edmund
Former British number one on BBC Two

The intent has just gone up a level in the past two games. It almost feels like nothing is going to stop Matteo Berrettini at the minute.

Image source, PA Media

That's one point ticked off for Matteo Berrettini with an ace.

Two points later he has three set points with some more strong serving, and he seals it with an ace.

We're heading to a decider and the Centre Court crowd are loving every minute of it.

Kyle Edmund
Former British number one on BBC Two

You can hear the volume levels going up as well from Matteo Berrettini. He is sensing something out there.

He gave himself two break points there with some unplayable shots.

Tim Henman
Former British number one on BBC Two

Brilliant hitting from Matteo Berrettini! He knows if he doesn't take the groundstroke on, his opponent will.

Great controlled aggression from the Italian.

Image source, Getty Images

Matteo Berrettini picks the right time to come forward and Grigor Dimitrov can't keep his backhand inside the baseline.

The Italian then brings up two break points with a magnificent forehand winner across court.

Berrettini gives the crowd just what they want by sending a backhand down the line to secure the break.

He's about to serve for the fourth set to take this match to a decider.

Kazakh 10th seed Alexander Bublik has just wrapped up a dramatic third set to lead American Frances Tiafoe on Court One.

Bublik saved five set points when trailing 6-5 before forcing a tie-break and eventually coming through 13-11.

Matteo Berrettini, serving to stay in the match, keeps his composure well with two big first serves which Grigor Dimitrov can do nothing about.

Dimitrov claws a point back with a fine backhand but Berrettini sees the game out with another unplayable first serve.

Matteo Berrettini shows his frustration as he hits a return into the net.

Grigor Dimitrov takes advantage by motoring through the rest of his service game.

A couple of holds to love in a row and this set is flying by.

Tim Henman
Former British number one on BBC Two

That was a good response from Matteo Berrettini. He was up a break, he just lost his previous service game, he was down 3-4 and trailing two sets to one, so he needed that.

Image source, Reuters

We're heading over to BBC Two for the conclusion to this match.

Meanwhile, Matteo Berrettini secures a routine hold and we're back level again in the fourth set.

It feels like the momentum has changed and Grigor Dimitrov works his way to 40-0 with a lovely forehand winner, before sealing the game as Matteo Berrettini scoops a shot wide.

The crowd are loving this on Centre Court.

Kyle Edmund
Former British number one on BBC One

Two excellent slices down the line there from Grigor Dimitrov to set up the rally. He was really getting Matteo Berrettini on the run. Then he just knifed a shot cross-court and kept it low to force Berrettini to hit the passing shot upwards. It was beautifully constructed.

Grigor Dimitrov is making Matteo Berrettini play in this game and the Italian's unforced error gives the Bulgarian a chance.

Dimitrov brings up two break points by coming out on top of a well-crafted point, polishing it off with a volley at the net.

He takes them at the second opportunity as Berrettini can't control a passing shot which is fizzed towards him.

We're back level in the fourth set.

Eugenie Bouchard
Former Canadian tennis player on BBC One

Matteo Berrettini has been able to read the game better. He is anticipating the slices from Grigor Dimitrov better as well as the moments he chooses to sneak into the net. We saw a few points earlier on where Berrettini did a great drop passing shot when he saw Dimitrov coming to the net.

Berrettini just looks like he has settled into the match, he looks more comfortable.

Now Grigor Dimitrov breezes through his service game with a hold to love.

Can the Bulgarian apply some pressure to Matteo Berrettini's serve now?

Tim Henman
Former British number one on BBC One

It seems like the tables have turned! Matteo Berrettini is getting the rub of the green here.