SA 262-9 (50 overs)
Lizelle Lee makes 117 from 107 balls
England 331-6 (50 overs)
Beaumont 101 (109 balls); Taylor 118 (106)
Second of three ODIs, Hove (series now level at 1-1)
Ebony Rainford-Brent
Ex-England batter on BBC Test Match Special
I initially thought 325-340 was on the cards, but with a couple of quick wickets, South Africa will be hoping to restrict England to nearer 300.
Taylor 86, Knight 2
Captain Heather Knight joins keeper Sarah Taylor at the crease. Plenty of experience and they plunder some singies from Khaka.
Sciver c Wolvaardt b Khaka 6 (Eng 236-3)
Khaka bowls a waist-high full toss which Sciver gets hold of, but hits straight down the throat of deep backward square leg - Laura Wolvaardt taking the catch as she sinks to one knee.
Sciver is furious with herself for getting out so quickly - there's a brief chance of a reprieve while the third umpire checks to see exactly how high that full toss was, but it's a legitimate delivery and Sciver has to go.
Van Niekerk rotates her seamers as Kapp returns at the Sea End - but Sciver casually flicks a four off her legs.
Alison Mitchell
BBC Test Match Special
I'm hearing Tammy Beaumont's century was only the third ODI century England have scored on this ground - the other two were in 1973!
Enid Bakewell and Lynne Thomas scored centuries that day. Rachael Heyhoe Flint got a few, she wasn't really needed.
England serve notice of their intent - by promoting the big-hitting Natalie Sciver up to number four.
If she gets her eye in, they should break out the tin hats at Hove - Sciver scored an unbeaten 180 for Surrey the other week. She's off the mark with a single.
Beaumont c Van Niekerk b Khaka 101 (Eng 227-2)
And just like that, it's over - Beaumont goes for another big hit, the ball swirls into the Sussex sky over deep mid-on and captain Dane van Niekerk takes a good, steepling catch. Sportingly, she runs over to shake Beaumont's hand before the England opener walks off, to congratulate her on a magnificent innings.
Eng 226-1
Superb from Tammy Beaumont, who brings up her fourth ODI century with three successive fours from the recalled Shabnim Ismail - the last being a carefully guided one to third man. She removes her helmet and salutes the crowd as they rise to applaud her.
Ebony Rainford-Brent
Ex-England batter on BBC Test Match Special
South Africa have four of the top 10 bowlers in the ODI rankings - but without having a solid keeper there. When you've got these bowlers, you need someone who can clean them up.
In the women's game, all the top teams have keepers who bat well like Alyssa Healy for Australia, and Sarah Taylor for England.
Eng 210-1
Time for a pre-powerplay drinks break while Dane van Niekerk reads the riot act to her side, and the England pair get to have a chin-wag with substitute Lauren WInfield.
Who South Africa bowl in the powerplay could be interesting - Van Niekerk and Kapp have put the brakes on a little, but both of them have four overs left apiece. Ismail and Tryon have five left, and Ntozakhe has three more.
Beaumont 86, Taylor 79
Beaumont sweeps, Van Niekerk appeals for lbw but the umpire shakes his head and signals a leg bye as England complete the run. Taylor helps herself to her ninth four of the day - these two have added 135 for the second wicket.
We've had a bit of a downer on Lizelle Lee's wicketkeeping this week - so it's only fair to note that she makes a good stop when Taylor steps outside off stump to Kapp's bowling, making as if to play a scoop over fine leg, but can't connect and Lee would have been unsighted but gathers the ball cleanly.
Another example of how fortune has deserted South Africa today - Taylor pushes the ball to Chloe Tryon at wide mid-on and calls for a single. Tryon would only have had one stump to aim at, but had her throw hit the stumps, Taylor would literally have not even been in the picture.
Ebony Rainford-Brent
Ex-England batter on BBC Test Match Special
It's looking very easy for these two - they've got so much time left, and the Powerplay coming up soon.
Beaumont 84 (98 balls), Taylor 73 (63)
Beaumont comes down the track to take Van Niekerk on - but when she hits the ball high over the bowler's head, fortune favours the Kent right-hander as it lands safely between three converging fielders - that's the 200 up for England, which is more than they managed in the 50 overs of the first game.
As I thought - with SA desperate for a wicket, they turn back to the pace of Marizanne Kapp. It certainly stops the England pair from moving about in the crease as they had been doing, though Kapp does stray with a wide.
Here's that slog-swept six from TB:
Beaumont 81, Taylor 72
Van Niekerk is quickly through her over, denying England boundaries but they're easily able to pick up ones and twos.
Lydia Greenway
Ex-England batter on BBC Test Match Special
Heather Knight's down to come in next - but is there temptation to change the order if a wicket falls now?
Possibly - they could send in Danni Wyatt, who could do a lot of damage with 20 overs left.
Khaka 6-0-42-0
For now, Taylor's continuing with the same bat - and there's nothing wrong with the middle as a full bunger from Khaka is swiped down the leg side for four. In contrast to Worcester on Saturday, Khaka hasn't really found her line and length today - and while Taylor is content to punish anything loose, the Proteas' fielding is starting to look a little ragged in places.
Time to go back to Marizanne Kapp, who's not bowled since the eighth over?
Natalie Germanos
BBC Test Match Special commentator
350 is definitely on if they continue to push.