When Rabada had Ben Stokes plumb lbw he jokingly put a finger to his lips - a reference to his ban from Friday's second Test at Trent Bridge for swearing at the all-rounder after dismissing him in England's first innings. Moeen Ali, despite being referred as a "batsman who can bowl", claimed his 100th Test wicket.
Stokes had not looked threatening in the first two sessions but in the third he made two key breakthroughs to maintain England's momentum. I'm not convinced Vernon Philander was fully fit even before having his wrist badly bruised by James Anderson, while Morne Morkel is risky but inconsistent and Rabada's replacement will either be the inexperienced Duanne Olivier or Chris Morris, a gifted all-rounder but not a bowler who will terrify Test batsmen.
Kuhn faced 42 balls for two single-figure scores at Lord's, undone by a flawless Stuart Broad delivery in the first innings and perhaps a little unlucky to edge James Anderson down the leg side second time out.
Dean Elgar connected with a wide delivery from James Anderson and fell victim to a wonderful slip catch from Liam Dawson.
Until then runs were not easy to come by, but De Kock, elevated to number four, sparkled with some wonderful strokeplay. "This is a side that can potentially play on any surface".
The pair wasn't completely dominant by any means as England's bowlers tested them and created chances.
These things are all part of the learning curve, and you don't become a world-class captain overnight.
By then, England had already wasted two reviews for lbw.
Root may also ponder the make-up of his attack, specifically the spinners.
Not in the mood to go through the sports news in detail, but can't quite get yourself to do away with it either?
"I do think in Test cricket, particularly, you have to make your own luck", said Elgar. In Wellington, South Africa were reeling at 94 for 6. "I would much prefer to be in their shoes".
Bairstow reflected on a day which therefore left both sides with their frustrations but hopes too that they are still in comfortably retrievable positions.
Joe Root, captaining in Test cricket for the first time, showed why he is rated as one of the top batsmen in the game, scoring 190. They were in front at tea so we will take four wickets in the final session.