Dawson is fizzing the ball past the bat like Shane Warne at times, Bairstow collecting one at shoulder height behind the timbers. Economical as well as probing, he has 1-13 from his seven overs.

Michael Vaughan
Ex-England captain on BBC Test Match Special

I would say that is probably the first time it has happened to Quinton de Kock and probably the last.

Michael Vaughan
Ex-England captain on BBC Test Match Special

Dawson is just trapping De Kock on the crease. He is bowling a good length and keeping him in two minds.

De Kock, with three centuries, 10 fifties and an average of over 50 to his name, is troubled by deliveries turning in out of the rough from Dawson, who spends much of the over with his hands on his head in exasperation, like people often do with me. There are a minimum of 26 overs remaining today. Are we going into Monday with its mixed weather forecast?

Bavuma is happy enough sweeping and he collects a second boundary with a powerfully struck shot off Moeen. The England spinner is going for a few runs all of a sudden.

A good over from the slow left-armer and Dawson records a second maiden. There is some sharp spin away from the right-hander and the Hampshire spinner will be hopeful of further success with plenty of overs left today.

Sussex are back at the delightful Arundel Castle today for a T20. The old Duke of Norfolk will not want too much loud music blasting out across his back garden.

Having not conceded a run in his first four overs, Moeen goes for 12 in this one, De Kock carving two boundaries into the off side.

Former skipper Alastair Cook is getting involved in the discussions with captain Root and the bowler but it is the Yorkshireman who is clearly in charge, directing his fielders like an assured conductor in full flow. Bavuma strikes a glorious boundary but a good one from Dawson gains some extra bounce and strikes the diminutive batsman, who is not much above the timbers as it is, on the glove.

De Kock scampers back into his crease having advanced down the wicket to Moeen but the throw does not hit the target in any case. Pressure still very much on the South African pair in the afternoon sunshine.

Looks like big-hitting Spaniard Jon Rahm has got the Irish Open, external sewn up, he has a seven shot lead with only a handful of holes to play. Back at HQ Dawson has a slip and short-leg to De Kock but as former England spinner John Emburey looks on from the stands, the left-hander averts any danger.

Andy Zaltzman
BBC Test Match Special statistician

Moeen Ali at home has 56 wickets in 22 Tests, away it is 46 in 16 matches.

South Africa collect three byes as Bavuma plays a sweep at Moeen and it misses everything. There are at least 33 overs remaining in the day

Vic Marks
Ex-England spinner on BBC Test Match Special

You have to give credit to Root for the way the spinners have played.

He has used them differently to Cook. Sometimes he used them as a last resort.

Root had Dawson on early in the first innings we were surprised when Dawson started after tea and he has got Amla out, one of the great players.

Moeen is bowling maidens and that is partly because Root has got them on early.

Dawson has a spring in his step now in his white rimmed dark shades from the Pavilion End and sends down a maiden to a watchful Bavuma.

Greg Double: Huge for Dawson - will do his confidence wonders. Now get five so people forget the pair.

Steve Pickett: To those saying earlier Dawson isn't worth his place- ssshhh!!

Moeen, sweat glistening on his shaven head in the afternoon sunshine, finally concedes some runs in his fifth over as De Kock turns one through mid-wicket. England women are taking wickets too, they've got Australia captain Meg Lanning out.