Chris Morris is off the mark, guiding Moeen for two through the covers as the off-spinner aims at the occasional footmark outside off stump. I remember Graeme Swann saying how he loved playing against Doug "The Rug" Bollinger, who as a left-arm seamer would create footmarks perfect for Swann to bowl at.

Graeme Smith
Ex-South Africa captain on BBC Test Match Special

Elgar has shown tremendous strength of mind, he has battled himself, his technique, but he puts in performances and finds a way. South Africa will be desperate to find him an opening partner. He has taken a lot of blows, his fingers are taped up all over the place and this is one he will remember.

Elgar nudges Roland-Jones for the 17th four of his innings, it looks like he's going to have to do it all nearly single-handed from here. He has 106 from 157 balls, and Roland-Jones has match figures of 27.4-6-87-8.

Here's Vernon Philander's brain-fade as he offers no shot to a straight delivery from the first ball he faces...

Andrew Samson
BBC Test Match Special statistician

Eight hundreds and eight fifties for Elgar now, a conversion rate of 50% obviously. The only other South African with a similar rate is Ashwell Prince, who made 11 hundreds and 11 fifties.

Elgar adds a single, the field is shuffled for the right-handed Morris who is yet to score from six deliveries.

Graeme Smith
Ex-South Africa captain on BBC Test Match Special

Dream debut for Roland-Jones, he has bowled superbly well. I thought in less helpful conditions he might just be a medium-pacer but his pace has been up in this innings, he has good balance and been accurate. Elgar and Bavuma fought hard but there has always been wickets in clusters for South Africa, that's been the problem.

Now, where were we? Here's how it ended for Temba Bavuma...

100 for Dean Elgarpublished at 12:03 British Summer Time 31 July 2017

12:03 BST 31 July 2017

SA 164-6

It comes up with a slog for four over mid-off as he takes the attack to Moeen Ali - but what a battling century from Dean Elgar. He removes his helmet and raises his bat in celebration. The Proteas players on the balcony are on their feet too.

Duncan Mitchell‏: Bavuma is so overrated. Averages 30 from 25 matches, don't get it...

Roland-Jones can't make that third breakthrough as Morris negotiates the over - but it's a double-wicket maiden. Well done TRJ.

Stephan Shemilt
BBC Sport at The Oval

Temba Bavuma lingered for a long time after seeing his fate sealed by the replay on the big screen. He got a pat on the back from Dean Elgar in sympathy. Nothing like for Vernon Philander. He was stone dead.

Close!published at 12:00 British Summer Time 31 July 2017

12:00 BST 31 July 2017

SA 160-6

Hat-trick ball, three slips, gully, short mid-on and a short leg in place, James Anderson into leg slip, the crowd on their feet... New batsman Chris Morris gets the edge - and Ben Stokes at gully gets an outstretched hand to it but can't hold on as the ball lands between him and third slip.

Andrew Samson
BBC Test Match Special statistician

Three players have taken a hat-trick on debut, the last was Damien Fleming of Australia.

So, Toby Roland-Jones, who took a hat-trick to seal the County Championship for Middlesex last season, has the chance for another - but he's going to have to wait until after the players take drinks. Oh, the suspense...

Alec Stewart
Ex-England captain on BBC Test Match Special

That's an incredible non-shot, the ball never started outside the line, brilliant bowling but what on earth is Philander doing?

Alec Stewart
Ex-England captain on BBC Test Match Special

That was a brilliant review, they took their time but Roland-Jones was adamant, so that was a brilliant review. A massive wicket because he was batting very, very well and Elgar looked untroubled.

Alec Stewart
Ex-England captain on BBC Test Match Special

Two noises in the headphones. Was it pad first?