Philander, collar up, charges in from the Vauxhall End, yet to concede a run after his first three overs and with a wicket already under his belt. Slanting his deliveries across Cook's off stump, the opener is happy to let most of the over go through to the keeper. Cook patiently waits until there's one on his pads which he can guide away for two, to spoil Philander's figures. (I say "spoil" - they're now a fun-sounding 4-3-2-1).

Stephan Shemilt
BBC Sport at The Oval

Look closely. Wrapped in the silver foil are four cans of lager. Some resourceful chap tried to pass his beer off as an innocent sandwich. Denied and binned. At £5.20 a pint, you can't blame him for trying.

Geoffrey Boycott
Ex-England batsman on BBC Test Match Special

Cook has played really well. In recent times his scores in the first innings haven't been too clever and for an opener on the first morning it's a question of whether you can get moving straightaway. I thought his footwork more or less straightaway was very good. You're going to get forced back a bit at The Oval because there is a bit more bounce. A couple of shots have been brilliant and leaves are so important outside the off stump.

You can hear the cheers all the way from Essex as Tom Westley opens his international account with a nudge off his legs for four. They say there's only two types of leave - a good leave, and a bad leave - and in these early stages, Westley certainly seems to know where his off stump is. Not something that can always be said of England's top-order batsmen in the past five years or so.

Jack: Jennings is out of his depth in FC cricket (35 average). Let alone Test cricket (23 average). Ridiculous selection.

Jake White: How long before people realise? Jennings out, Stoneman in! What more has the man got to do to get a call-up!

Here's how Jennings perished this time around:

Phil Tufnell
Ex-England spinner on BBC Test Match Special

Cook is so pivotal for England, if he gets runs the crackerjack batsmen can go about their work in their usual way.

Image source, Getty Images

Philander has the chance to bowl to Cook for the first time, and the former skipper - who's scored all of England's first 17 runs, albeit four of them were slightly fortuitous - is as resolute in defence as you might expect. Maiden.

Image source, Getty Images

Today, as we have been doing every day this summer, we'll be holding a FaceBoycs Live at tea. Essentially, any burning question you've got for Geoffrey Boycott can be served up on a social media platter.

Phil Tufnell
Ex-England spinner on BBC Test Match Special

Jennings will be bitterly disappointed, he would have felt the pressure after Trent Bridge and a few low scores. You just get the feeling that Philander has got the nod on him.

Image source, Reuters

A brief delay in play while a gentleman takes his seat behind the bowler's arm - will they ever learn? - as Morkel continues his probing examination of the corridor outside Alastair Cook's off stump. The strike is rotated for the first time as Cook pushes a single into the covers, a wild throw from Heino Kuhn misses the stumps and disappears for four overthrows - so Cook has a five to his name. South Africa summon a fielding helmet for Temba Bavuma, who as a diminutive junior batsman in this side, is the obvious choice to go under the lid at short leg.

Ed Smith
Ex-England batsman on BBC Test Match Special

Westley is quite different to when I played against him and he was quite a leg-sided player, now he is a more rounded batsman.

Phil Tufnell
Ex-England spinner on BBC Test Match Special

Westley is one of those that you look in the paper he has always got runs by his name. He has been churning them out for a few years now as well.

Time for Tom "no middle name" Westley, a Cambridge-born 28-year-old right-hander from Essex, to make his international debut. He lets his first couple go by outside off stump. Worryingly, it looks as though he's got white sticky tape keeping his helmet grille in place.

Andrew Samson
BBC Test Match Special statistician

Three ducks in his Test career already for Keaton Jennings, in just nine innings.

Phil Tufnell
Ex-England spinner on BBC Test Match Special

He took it low down by the grass clippings. Jennings had got stuck, they weren't able to rotate the strike and Philander will examine your technique, the odd one will nip back or away. It felt inevitable he would find the edge.

Image source, Reuters

As ever, you'll be able to watch in-play highlights throughout this Test, if you're in the UK. Here's Alastair Cook's edged four from the first over.

Eng 12-0published at 11:13 British Summer Time 27 July 2017

11:13 BST 27 July 2017

Looks a decent crowd in at The Oval for its 100th Test, though a few patrons are yet to take their seats. Cook is hit on the thigh by a lifting delivery, but grits his teeth to thread a fourth through cover - Heino Kuhn gives chase all the way, but his dive is in vain. Next ball, it's on his legs and that's meat and drink for the Chef as he guides it through square leg for four more.

Morkel gets a smidgen of revenge as Cook is "hit amidships", as Aggers puts it. Ouch indeed.