Postpublished at 14:08 Greenwich Mean Time 5 January 2020
Daniel Norcross
The Cricket Social
And it's a long session too - there are 37 overs to be bowled in it.
Sibley nears maiden Test century
Sibley 85* - adds 116 with Root (61)
Root 61, Denly 31, Crawley 25
Nightwatchman Bess falls to final ball
Two wickets for Nortje
SA 223 - deficit of 46: Anderson 5-40
Stokes five catches - England record
SA lead 1-0 in four-Test series
Second Test, day three, Cape Town
Stephan Shemilt
Daniel Norcross
The Cricket Social
And it's a long session too - there are 37 overs to be bowled in it.
Michael Carberry
Former England batsman on The Cricket Social
You've got to wear down the opposition. There is still a lot time left in this game. This is where England can put the game well out of South Africa's reach. This is where the Test match is won.
Lead by 186
Faf du Plessis is starting to get frustrated. When Sibley shoulders arms, the ball beats everyone and runs for what is given as four byes. However, it actually clipped Sibley's front pad and should have been signaled dead ball (because he wasn't playing a shot). Du Plessis asks the square leg umpire to intervene, but there's no changing the decision. Seething.
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Dwaine Pretorius gets the ball to spit from a crack, but because he's only in the mid-70s, Joe Root has plenty of time to adjust. Root won't mind too much, knowing South Africa will have to bat last on the deteriorating surface.
Steven Finn
England bowler on The Cricket Social
It's getting to the stage where South Africa desperately need a wicket.
Garry Sobers or not, does that give you the right to be pushing in?
Text 81111
My wife once worked as a waitress at Canterbury. During a function she told Garry Sobers not to push in, and to get to the back of the queue. Not a clue who he was , but recognised Colin Cowdrey when he had a quiet word with her.
Steve in Folkestone
Sibley 60, Root 14
The Maharaj-Root battle is getting a bit silly. When Root shapes to reverse slog/switch hit, Maharaj fires it so far down the leg side he's flirting with giving away a wide. The Barmy Army have come into full voice. Their team are setting themselves for a push towards victory.
Steven Finn
England bowler on The Cricket Social
The fact that Dom Sibley has ground the South Africans to this point means he has got the right to cash in now.
Lead by 176
This is superb from Sibley, who is growing in front of our eyes. A leg stump half-volley from Dwaine Pretorius is driven through mid-wicket with the sort of timing that would make a metronome jealous.
Jonathan Agnew
BBC cricket correspondent in Cape Town
England are cementing their position. They have been pretty ruthless today, taking those two wickets and now nailing down this lead. They're just building it very slowly indeed.
Lead by 172
I once asked the late, great Richie Benaud for a photograph. We were on a hotel car park at the time. He said no. Only problem was, we were both staying in the same hotel, so then had to stand next to each other whilst we waited for the lift.
Text 81111
I once got told to go forth and multiply (though in not so many words) by Shane Warne. Apparently he didn't like me getting too close to his team huddle while I was the Essex mascot.
Eddie the Eagle
Joe Root doesn't look keen to be tied down. He's trying various things to get after Maharaj. Forward, back, attempted reverse sweep, attempted conventional sweep. A lot of huff. No puff.
#bbccricket
Daniel: Well played Sibley! Great moment for him to get his first half century. Dug in, blunted the new ball and has gradually built up this lead. Really good innings so far, now keep going!
Jonathan Agnew
BBC cricket correspondent in Cape Town
Sibley is just inching ahead again of the overs.
Eng 120-2
England have tried a lot of openers. I'm not saying Dom Sibley will have a long career or that his technique won't be found out, but I like his mentality.
He guides Rabada to third man to reach his first Test half-century, which has taken all of 140 balls.
After all they have been through for the best part of a decade, England fans will welcome any batsman who is happy to dig in.
Mark Ramprakash
Ex-England batsman on The Cricket Social
Sibley has provided a lot of stability for England. The dressing room will be very happy to see him grinding South Africa down.
This might be Dom Sibley's best shot of the day. Back-foot punch for four off Rabada. Sibley on to 48, nearing that first half-century.