Image source, Getty Images

Disqualification and smashed racquets... world number 14 Andrey Rublev is no stranger to outbursts on and off court.

Success at Wimbledon this year looks like one of two things for the Russian - win - or "lose it in a mature, adult way".

The 27-year-old has been working on controlling his emotions, with two-time major champion Marat Safin brought in to help address those his temper issues.

Rublev repeatedly smashed his racquet into his leg before losing in the first round at SW19 last year and has cited that moment as the one when he knew things needed to change.

"I was not dealing with the issue of losing or not losing, it was not the issue even of tennis," Rublev said.

"I was just dealing with myself, just to face myself, to stop running away from myself and I was just dealing with that. What's happening inside of me, why I feel this, why I feel that, why I am doing this?"

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Some of the numbers from this match, which is approaching the end of this fourth set, are simply incredible.

Nicolas Jarry has hit 87 winners, including 42 aces.

Cameron Norrie has had only 18 unforced errors.

Image source, PA Media

Nicolas Jarry finds another fine forehand winner but is just wide with his return on the next point so Cameron Norrie completes a hold to 30.

Beginning to think we might never see a break of serve again.

John Lloyd
Former GB Davis Cup captain on BBC One

People will say that it's just big serving and three or four shot rallies, but what they are doing is outrageous.

The power they are hitting with, the athleticism, it is incredible.

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Whether it is forehand, backhand or a slice, knowing what type of shot to play and when is key to winning tennis matches.

But so too is a player's position on the court - with the very best in the world knowing where to be to anticipate a return, or to gain a few more valuable seconds to plan their next move.

Few are better masters of this art than Carlos Alcaraz, who is proving to be one of the most complete players on the tour at the moment.

Having won the French Open in his final match of the clay season, the 22-year-old Spaniard transitioned to grass seamlessly by winning Queen's for the second time last week.

It sets him up perfectly for the pursuit of a third title in a row at Wimbledon, where his dominance of the court will once again come to the fore.

"He is so exciting," former British number one John Lloyd told BBC Sport.

"He is so quick, lightning quick, groundstrokes are huge both sides. He has one of the best volleys on the tour, his serves are getting better and better.

"He is a showman and a great entertainer."

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Defending champion and world number two Carlos Alcaraz takes on 14th seed Andrey Rublev for a place in the quarter-finals.

The pair are due on court at 18:02 BST.

Nicolas Jarry up to 42 aces now.

Cameron Norrie serving to stay in the set.

Image source, Reuters

Aryna Sabalenka on her victory against Elise Mertens: "First of all guys it feels so good to feel all of the support. I feel like today I got you on my side, right?! Thank you guys for the support. This is so cool. I'm super happy with the performance. It was a battle. She always brings great tennis on court. I'm super happy to get the win."

On playing former doubles partner Mertens: "I mean it's tough to play against someone you know quite well. She's a great player and person. It's tricky. Especially I know her smart she is. I know she will fight to the very end to find something. She really challenged me. I'm super happy with the win."

On a search for a maiden Wimbledon title: "With your support guys I think everything is possible. I don't know. It's such a beautiful tournament. I always dreamed of winning it. Every time I'm here I'm trying to give my best and really hope for the best."

Nicolas Jarry starts his latest service game with his 40th ace of the match.

Helps when you're 6ft 7in, I suppose.

He then sends down a 136mph serve, his joint-fastest of the match, but Cameron Norrie belts it back for a return winner.

A drop shot from Jarry drops the wrong side of the net from his perspective - deuce.

John Lloyd
Former GB Davis Cup captain on BBC One

That height is basically like serving from a ladder.

The pop Jarry can get on that - and the bounce.

Greg Rusedski
Former British number one on BBC Radio 5 Sports Extra 2 and BBC Sounds

Cameron Norrie has been living dangerously in the last two service games.

He is doing what he does best and battling, but that first serve percentage is dropping off right now. It is at 46% - it has to be higher than that.

Nicolas Jarry is sniffing around again on a Cameron Norrie service game.

0-30 - but Norrie, once again, finds his way out of that particular corner with four straight points.

A mixture of fine serving, excellent defence and well-crafted points keep the Briton on serve in the fourth set.

Jeff Tarango
Former American tennis player on BBC Radio 5 Sports Extra 2 and BBC Sounds

Both players have gone from all power to all scrappiness.

These last few points have just been an absolute dog-fight. There's no prediction on who is going to miss what.

Both players know each other so well that they are having to come up with something different here.

That should be 6-3 Aryna Sabalenka but she misses a simple volley to keep Elise Mertens alive in this tie-break.

Nicolas Jarry throws in a double fault but that's the only blip in this game for the man from Chile.

John Lloyd
Former GB Davis Cup captain on BBC One

That has to be one of the best games in terms of quality and pure striking between the two players.

Some of the rallies in that game were ridiculous.

Aryna Sabalenka wins BOTH points on Elise Mertens' serve to take a mini-break lead.

It's the drama, Mick.

Image source, Getty Images

What a time for Aryna Sabalenka to hit her first double fault of the match!

Cameron Norrie faced - and saved - three break points in that game alone.

Before that, he'd faced two in about three hours.