Not too much being given away by either man so far. Six games gone at an average of three minutes apiece and we're level at 3-3 at the halfway point of the set.

Cameron Norrie leaps high to send away a winner at the net and that helps him to 3-2. It's already looking like a long night on both Centre and One.

Iga Swiatek v Petra Martic is still to come before Andy and Jamie Murray wrap up the day with some men's doubles action on Centre.

On our court, Court One, there is another men's second-round tie to come after this one as unseeded American Marcos Giron takes on Germany's fourth seed Alexander Zverev.

Here's the moment Novak Djokovic got over the line against British wildcard Jacob Fearnley.

About five minutes earlier Fearnley had been two points away from forcing a fifth set.

Jack Draper looks fine after that earlier slip and holds for 2-2.

We've already seen one hard-fought match-up between the British number one and two on this court earlier today in the shape of Harriet Dart's thrilling win over Katie Boulter and early indications are this is going to be another close one.

Emily Salley
BBC Sport at Wimbledon

There's a handful of Cameron Norrie's friends and family a few rows down from me on Court One.

Every time he wins a point, it's "let's go, come on". Norrie looks up to them after getting his first point on Jack Draper's serve and gives a short nod.

Charlotte Coates
BBC Sport at Wimbledon

Ons Jabeur is through without dropping a set in the tournament so far.

The crowd love her here after her two appearances in the final and will be willing her on to go all the way.

She says after the match: “We’re living the dream of winning Wimbledon. This is my favourite crowd.”

Image source, BBC Sport

A slip from Jack Draper at the back of Court One and he grabs hold of his hip, but hopefully there's no damage and it doesn't impede him. Norrie had been 15-30 behind, but maintains hold of his serve for 2-1.

A first half chance for Jack Draper at 15-30 on the Norrie serve after the pair exchanged early holds.

Jonathan Jurejko
BBC Sport at Wimbledon

Sensational stuff. Few predicted Fearnley would get to 10 games over three sets, never mind nick a set from Djokovic.

Djokovic claps his racquet and points to Fearnley when he takes the customary acclaim from the fans in the middle of the court.

The 24-time major champion then joins in the standing ovation for the British number 13.

An afternoon that will long live in the memory.

Jacob Fearnley will be back, surely.

He was so good today and made Novak Djokovic look very ordinary at times. He gets a great reception as he skips off Centre Court.

Emily Salley
BBC Sport at Wimbledon

Court One is looking rather bare as Jack Draper and Cameron Norrie walk out for their second-round tie.

It's not surprising that the crowd needed a breather after that mammoth match between Harriet Dart and Katie Boulter.

I'm sure it will fill up pretty quickly again for another British number one v British number two encounter.

Huge roar after Novak Djokovic finds the net with a forehand. 30-15.

But then Jacob Fearnby hits a return long. Two match points.

Novak Djokovic doesn't make mistakes in the big moments, usually.

So far it's the case here. He aces to go up 30-0.

Charlotte Coates
BBC Sport at Wimbledon

Ons Jabeur upped the ante at the vital moment and broke the serve of Robin Montgomery.

The 10th seed is now a game away from the third round.

Court two cheer her on all the way.

Jacob Fearnley looks a beaten man at the change of ends.

But he's shocked Novak Djokovic plenty of times already this match. He's got to dig deep one final time.

Christian: Fearnley will lose this but he’s done himself proud in this match, what a performance

Double fault! Novak Djokovic breaks for the first time in the fourth set.

He'll serve for the match.

Gasps on Centre Court. Jacob Fearnley hits a forehand long. 30-40.

Jacob Fearnley serves a double fault and then misses his first serve.

Pressure? Nah! He then nails a 107mph second serve and wins to go up 30-15.