And sometimes, it's just your day.

Nat Sciver-Brunt inside-edges the ball for four off Nadine de Klerk, a whisker away from dragging on to her stumps.

South Africa need to get some control back, and quickly. It is running away from them at the moment and the pitch is offering very little.

The odd one is keeping low from the spinners but none of them have been able to bowl consistently full enough to exploit it.

Daniel Norcross
Test Match Special commentator

South Africa's bowling hasn't been great. You have to get into that attacking mindset and Test bowling is very different from the containing bowling of white-ball cricket.

You've got to be gutsy.

Too short again, pulled for four again.

South Africa are making this very easy for England. Of course, they don't play much Test cricket and England are a stronger side but they just can't get the basics right.

Five runs are worked off Chloe Tryon's latest as Nat Sciver-Brunt continues to cruise. She has 72 from 73 balls and it's been completely chanceless.

Another century looks inevitable, I'm not even afraid of putting the curse on her at this point.

A quiet over from Sune Luus as Maia Bouchier just settles back into things after all the excitement.

She's struck 18 fours and two sixes in this knock so far.

Lydia Greenway
Former England batter on BBC Test Match Special

There is real emotion for her and her team mates. Her dad is in the crowd too. She has been pretty chanceless so it is really well deserved.

100 for Maia Bouchierpublished at 46 overs

46 overs

Eng 219-2

Image source, Getty Images

A Test debut of dreams for Maia Bouchier!

Nat Sciver-Brunt kindly takes a single to give her one ball of Chloe Tryon's over to work with, and she slashes it down to deep third to bring up a sensational century from 124 balls.

The pair share a big hug, and all of England's players are on their feet in applause.

The boundaries continue to flow from Nat Sciver-Brunt.

To be perfectly honest, South Africa have bowled terribly too her. So much has been short, as she pulls another off Chloe Tryon to the ropes.

Nat Sciver-Brunt nicks the strike from the final ball of the over to keep Maia Bouchier waiting a little longer.

Srinivas Vijaykumar
Cricviz analyst

44 of Nat Sciver-Brunt's 59 runs in this innings have come through the on-side.

Close!

Maia Bouchier moves to 97 by edging past Anneke Bosch's outstretched hand at slip.

Lydia Greenway
Former England batter on BBC Test Match Special

Chloe Tryon's bad ball is the drag down. Maybe she grips it too tightly or is anxious to bowl well to Nat Sciver-Brunt but it's not a great.

And again!

Same ball, same result to bring up England's 200 in very good time. Nat Sciver-Brunt could get to three figures first at this rate.

Bouchier is being made to wait, though.

Chloe Tryon bowls far too short and Nat Sciver-Brunt doesn't hesitate in pulling for four.

Srinivas Vijaykumar
Cricviz analyst

Maia Bouchier is clearly attacking the second part of an over in this innings. 13 of her 18 boundaries have come in the second half of an over today.

• First three balls of an over: 29 (57) [4s - 4, 6s - 1]
• Last three balls of an over: 64 (65) [4s - 12, 6s - 1]

Lydia Greenway
Former England batter on BBC Test Match Special

Nat Sciver-Brunt has had to show restraint as well, usually she looks to work the ball much squarer in white-ball cricket but she has kept that discipline today.

Sune Luus closes out the over well with just a single coming from the last ball, as England's pair have a quick chat in the middle before Bouchier gets back to business.

She's on 93.

50 for Nat Sciver-Bruntpublished at 42.2 overs

42.2 overs

Eng 193-2

England's star all-rounder has her fifty in no time.

Nat Sciver-Brunt sweeps Sune Luus for four to bring up her half-century from 46 balls.

Player.

Alex Hartley
Former England bowler on BBC Test Match Special

The one thing about bowling to Nat Sciver-Brunt is you don't want to just put it there. You've got to try to spin the ball and get some revs on it.

It's getting trickier to do that though with the wind picking up.