Paul Grayson
Former England fly-half on BBC Radio 5 Sports Extra

That's a great comeback.

It's not just down to the three subs, it's an eight man effort.

That's a massive turnaround from what was happening before half-time.

Much better scrum from Gloucester as they secure the ball and then their new front row push Sharks back.

We didn't see that at all in the first half.

Scrum time!

Gloucester put in...

And immediately Gloucester's Ollie Thorley gives away a penalty for holding on.

Not ideal.

Gloucester get things back under way.

Can they get Jonny May into the game? Can their replacement front row find any answers in the scrum?

The next 40 minutes or so will tell us...

As expected, Gloucester are changing their front row at the break.

Jamal Ford-Robinson, Seb Blake and Fraser Balmain are all coming off.

Santiago Socino, Mayco Vivas, Kirill Gotovtsev will start the second half.

Simon Devereux
Former Gloucester forward on BBC Radio Gloucestershire

Image source, Rex Features

The Sharks are thinking job done, they feel like they are bossing the game. We didn't see that in the first 20 minutes, did we?

16-3, it doesn't seem to reflect the balance of the game.

Gloucester have lost four, five, six scrums.

It's Gloucester's scrum, they know where they are going and yet somehow they look outnumbered. There's some miscommunication going on there.

Paul Grayson
Former England fly-half on BBC Radio 5 Sports Extra

The scrum has been utterly dominated by the Sharks.

The physicality of the Sharks, the nature of the way they've attacked Gloucester in the scrum - they are absolutely direct.

We said before the game, the one area that would find Gloucester out if they got stuck in the cycle of scrum, penalty, drop ball, scrum was that part of the game and it's proved to be that.

They've got to come up with something to get points on the scoreboard.

Sophie Hurcom
BBC Sport at Twickenham

Whenever there's been a pause in play, Gloucester's backs have gathered for a quick huddle.

But after that opening 10 minutes of pressure, Gloucester's attack just hasn't been able to get going and can barely gain any metres going forward against this strong Sharks' defensive pack. They've gone side to side, then backwards.

Winger Jonny May - on his final appearance before leaving the club - has often cast a lone figure by the touchline in front of us and often been looking up to the sky as he paced back and forth. Penny for his thoughts right now?

Image source, Rex Features

A half dominated by Sharks' forwards.

Gloucester knew how good the South Africans could be at scrum time, but they've had no answers.

Phepsi Buthelezi scored the only try of the half, bursting through with pace and power.

Big team talk coming up for George Skivington. His side need to find a way of competing in the pack.

Image source, Rex Features

And another scrum with a Gloucester put in.

What's this one going to bring?

Gloucester get it out and spin the ball wide, but are then guilty of going over the top at the breakdown.

Sharks penalty. More indiscipline from Gloucester.

Gloucester get the ball out of the scrum without an infringement!

Gloucester's Ollie Thorley clatters into the back of Francois Venter and then into Aphelele Fassi as the Sharks man tries to claim a high ball.

The referee takes a look but decides it's a knock-on by Fassi. Scrum to Gloucester.

You know where this is going...

Andrew Priestley: A Sharks feeding frenzy at scrum time.

Simon Devereux
Former Gloucester forward on BBC Radio Gloucestershire

It's relentless, Siya Masuku's kicking.

Gloucester just can't deal with the scrum and it's costing them.

Four from four for Siya Masuku.

Straight through the middle from 34 metres.

This is getting silly now.

Gloucester win a scrum on halfway following some good work from Santi Carreras, but it collapses and Sharks get the penalty. Their fourth from a scrum.

Siya Masuku will kick from 34 metres...

Paul Grayson
Former England fly-half on BBC Radio 5 Sports Extra

That early momentum from Gloucester has swung all the way back via the power of the scrum to the Sharks.

You can see why they might have struggled this season because their attack is clunky at best, but they've just got awesome athletes on their team that can get them going forward when it seems like there should be none.

Another infringement by Gloucester in front of the posts and Siya Masuku will look to stretch Sharks' advantage to 10 points.

And the fly-half makes no mistake.

Gloucester are looking a bit ragged as this half draws on. They're being pummelled up top.

Sharks are showing their dominance in the scrum as they win a third penalty.

The South Africans kick to touch.