Image source, AP

What's Bavuma had for breakfast? First ball is the sort of cover drive that's worth the ticket price alone. Only three, but a sign that the little man is in very good touch. There's more sunshine poking through, making the humid conditions a touch more sticky. It's early in the day, very early, but it's starting to feel more like a time to bat.

Rich Adams: OK, going for a run now. If the players could have a really long drinks break until I'm back that would be great, thanks.

As it was now and ever shall be, Stuart Broad shares duties with Anderson. Temba Bavuma takes guard a couple of inches outside of his crease.

Close!published at 91 overs

91 overs

SA 331-5

First ball! Very, very close to Quinton de Kock walking back. He gets a chunky inside edge, but the bell just dies before it gets into the paws of Jonny Bairstow. We're only talking a blade of grass or two. Very good start from Anderson, who immediately looks more dangerous than yesterday.

Geoffrey Boycott
Ex-England batsman on BBC Test Match Special

"Anderson looks way off the pace. He's medium pace - he's lost the nip. He needs to go back to Lancashire and play most of those County Championship matches in April. I'm not so sure he will do it again for England overseas.

"He's such a fit young man and really talented. But he really needs to get in rhythm. When you're older it takes longer to pick it up after you've been out for a while. That's the problem when you get to 33."

The players are out in the middle, perhaps with the sun just trying to poke through. James Anderson has the newish ball in hand, round the wicket to left-hander Quinton de Kock.

It is Saturday morning, it is early, so what are you doing up and about? Early dash to the shops? Taking the kids swimming? Maybe you're on a weekend away.

Do you let me know how you're following the cricket. A picture is always appreciated too.

England coach Trevor Bayliss on Jonny Bairstow's dropped catch on day one: "Jonny is very disappointed as well. He continues to work very hard at his game - it's not through lack of effort. It's a work in progress and hopefully he keeps making improvements. Since the first Test in Durban, he's made improvements in his footwork. But it's about doing it 100% of the time."

Geoffrey Boycott
Ex-England batsman on BBC Test Match Special

"England have a chance this morning with a ball that's only 10 overs old. This is a good cricket pitch, but if you bend your back and hit the right length - not too shot, not too full - you can get something out of it. You can knock over the last remaining wickets. If  they get them for only 50 or 60 runs, England will think they got out of jail."

England coach Trevor Bayliss: "It was not one of our better days. A couple of the guys have struggled to find their rhythm and the correct length. We probably gave them too opportunities to hit easy boundaries but it was a true test of character in that last session to get back in the game.

"We did have a bit of a chat at tea-time yesterday - not necessarily a rev-up but just a reminder of what we do when we play well. I can put up with us not having a good day with the ball but we can make improvements on the energy and attitude in the field."

Hmmm, it does look a little grey at Centurion, a little heavy. A bowling morning? It failed to swing in very similar conditions yesterday. Even if the ball does do a bit, England will then have to go and bat.

England coach Trevor Bayliss on Sky Sports: "Hopefully we can come out like we did yesterday afternoon, knock them over and bat big. You never know - it could be like another Wanderers performance."

Mark Boucher
Former South Africa wicketkeeper on BBC Test Match Special

"Sometimes with this wicket, when the ball hits the surface it takes divots. There are one or two already, and AB de Villiers had the heavy roller this morning, so it will be interesting if they harden up. The wicket tends to be up and down as the game goes on. It's muggy this morning so there might be a bit of swing."

BBC Test Match Special

And while you're rubbing the sleep from your eyes on this Saturday morning, or even just dozing under the duvet, allow TMS to be the soundtrack to the start of the weekend.

They are on air from Centurion and can be heard on 5 live Sports Extra, or by hitting the live coverage tab at the top of this page.

And that is where we begin today. England will be on the hunt for early wickets, while South Africa are looking to bat them out of the game.

What do you make of it? England to come roaring back from a poor first day, or South Africa to nail this one down?

Text 81111, tweet using the hashtag #bbccricket or email tms@bbc.co.uk.

The Proteas were helped by a very off-colour England display. In the first two sessions, only the bowling of Stuart Broad and the wonderful short leg work of James Taylor deserved any praises.

Wicketkeeping errors from Jonny Bairstow, some very average bowling from James Anderson and Chris Woakes.

The improvement after tea at least pegged the home side back to 329-5. England still in with a sniff.

A century on debut, watched by his dad and former Proteas opening bat Jimmy. Wonderful stuff.

It was Cook's ton and a magnificent century from Hashim Amla that gave South Africa the edge on the first day of the fourth Test.

Image source, Getty Images

For Cook, it took 15 years and more than 11,000 first-class runs to convince the South Africa selectors he was the man to open the batting in Test cricket.

When the chance finally came, he wasted no time in taking it.