Darren: This is a war of attrition. And Djoko is just better at making the other guy blink first.

John Horne: Yesssss get in there, a brilliant set win Novak to take you 2 sets to 1 up, truly brilliant, amazing Tennis Novak. Its a great Men's Singles final between Djokovic v Berrettini. A credit to them both.

Wide from Djokovic, and Berrettini makes the opening hold.

Superb! It's all or nothing for Matteo Berrettini in the fourth set, and the Italian whips an excellent forehand down the line to edge 30-15 up.

An attempted sliced drop shot fails to clear the net, though, and Djokovic closes to 40-30.

Jonathan Jurejko
BBC Sport at Wimbledon

Djokovic holds his pose of fist clenched and bicep tensed like a prize-winning bodybuilder as he struts back to his chair.

Then he nods in appreciation as a loud 'Nole' chant echoes around.

Image source, Getty Images

Russell Fuller
BBC tennis correspondent at Roland Garros

Djokovic has looked pretty serene since dropping that first set.

He's enjoying the chants of 'Novak' and he deserves them.

Celebrations from Djokovic - he's bounced back so well - just as you would expect the world number one to do so. He's one set away from a 20th Grand Slam singles title.

Matteo Berrettini must respond by winning this next set if we're to be treated to a five-set thriller on Centre Court.

The Italian gets us under way in the fourth.

Jonathan Jurejko
BBC Sport at Wimbledon

Apparently our friend Tom Cruise will be at Wembley tonight, too. Be interesting to see what the Top Gun star does if this match goes to five sets. He might need to jump in his F-14A Tomcat fighter plane to get there from SW19 in plenty of time.

The first set point comes and goes, the first serve on the second is no good, but after a fine rally, Berrettini sends a shot out and Djokovic leads two sets to one.

Djokovic comes in to charge after a forehand, Berrettini gets to it, but the world number one digs out a winner from his shoelaces. Two set points.

Russell Fuller
BBC tennis correspondent at Roland Garros

No signs that Berrettini is feeling tired - but he is a little bit behind and Djokovic still looks the more likely at the moment.

Matteo Berrettini is at the net and just needs to push over a volley for a certain winner, but it's into the net.

But it's the quickest of mental resets for Mah-tay-oh as the crowd chant with a great cross-court winner followed by a successful volley and that's a hold.

Djokovic to serve for the third set now, though.

Boris Becker
Three-time Wimbledon champion on BBC TV

Djokovic is not doing anything excellent, but he's doing everything pretty good - and so far that is good enough to have the lead.

Djokovic gets to 40-15, he loses the next point after putting a two-handed backhand wide of target, but the next serve is a good one and Berrettini can only paddle it back into the net.

Jonathan Jurejko
BBC Sport at Wimbledon

After Djokovic clinches the hold, he turns again to the crowd and tells them something which I can't quite make out.

And another chant for Berrettini before the Italian's service game is only going to strengthen Djokovic's already glue-like resolve, you would think.

Russell Fuller
BBC tennis correspondent at Roland Garros

Djokovic conceded this game - a spectacular hold to love for the Italian.

As Tom Cruise watches on, Matteo Berrettini does a great job to hold quickly.

Just who will be Top Gun on Centre today?

Jonathan Jurejko
BBC Sport at Wimbledon

Don't make him angry. Djokovic almost turns as green as the Incredible Hulk as Centre turns into the Stadio Olimpico.

After saving the second break point, the Serb taps his head again and mutters something to the crowd sat behind the umpire's chair.

Then there is a loud response from his fans. Like a Davis Cup tie!

The hold of a champion there from Novak Djokovic. Two points Berrettini had for it to be all square at three-three and one-set all.

Djokovic digs deep and he's now just two games from a two-one lead.

Berrettini into the net and there goes the second break point chance.