Eng 381-7published at 98.4 overs
That's glorious from Ben Foakes, freeing his arms and lofting Keshav Maharaj over mid-off for four.
An easy single takes the England wicketkeeper to 96, just four away from his second Test century.
Elgar & Erwee survive 9 overs
England 415-9 dec - lead of 264
Foakes 113*, Stokes 103, Bairstow 49
Stokes & Foakes add 173 for 6th wkt
Nortje 3-82, Maharaj 2-78
Second Test, day two, Old Trafford
Today at the Test, BBC Two, 19:00 BST
Sam Drury, Timothy Abraham and Amy Lofthouse
That's glorious from Ben Foakes, freeing his arms and lofting Keshav Maharaj over mid-off for four.
An easy single takes the England wicketkeeper to 96, just four away from his second Test century.
Vic Marks
Former England spinner on BBC Test Match Special
England are really getting a grip of this game.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
The lead is up to 222 with the power to add to that and there is just the possibility that Ben Stokes might want to get the South Africa openers in tonight.
Foakes 91, Robinson 8
Ben Foakes moves serenely into the 90s with the calmest of pushes into the covers.
Four!
Ollie Robinson leans back deftly guides an Anrich Nortje delivery over the keeper's head and down to the boundary rope.
Keshav Maharaj has replaced Simon Harmer and whirls his way through a sedate over.
To be honest, I'd just watch a format where Stuart Broad bats for an unspecified period of time.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
The Hundred is missing a trick here. They could have a Nighthawk role where the batter comes out in a cape and gets double runs.
Ollie Robinson does well to not nick his third delivery from Anrich Nortje behind.
A single is all England can work from this latest over.
Ben Stokes fell a little earlier after making his first Test hundred as captain.
Lead by 210
That's the first wicket of the match for Simon Harmer, incidentally, who has had a rough old time of it at the hands of Stokes and Foakes.
#bbccricket
Joe Gibney: Nighthawk crash lands.
Stuart Broad, naturally, offers Ollie Robinson some batting advice on his way out.
Vic Marks
Former England spinner on BBC Test Match Special
A typically skittish innings from Broad but very handy. The momentum has not changed.
Alison Mitchell
BBC Radio commentator
Smart work from Verreynne. High fives and pats on the back for Simon Harmer. Stuart Broad's sprightly knock comes to an end.
Broad st Verreynne b Harmer 21 (SA 361-7)
The Nighthawk has had his wings clipped.
Stuart Broad dances down the pitch to Simon Harmer, misses, and is stumped by a mile, even with a slight fumble from keeper Kyle Verreynne.
Lead by 209
I've just been informed that there is an actual bird called the nighthawk. It is, according to a popular online encylopedia, "mostly active in the late evening and early morning and feeds on moths and other large flying insects".
You learn something new every day.
Vic Marks
Former England spinner on BBC Test Match Special
This is how the Nighthawk bats.
Alison Mitchell
BBC Radio commentator
Broad just swung in hope.
A horrible full toss from Anrich Nortje, and Stuart Broad dances down and, somehow, manages to carve it square for four.
Honestly. A fascinating man. He's on 20 from 11 balls.