South Africa win by 257 runs
Windies crumble to 151 all out
S Africa score 408-5 - 2nd highest WC total
AB De Villiers scores fastest ODI 150
Test Match Special coverage via audio icon
Andrew Samson
BBC Test Match Special statistician
"AB de Villiers reached 3,000 ODI runs as captain when on nine today. His 60 innings as captain to reach this milestones is the quickest in ODIs.
"India's MS Dhoni is next quickest with 70 innings, fellow Indian Sourav Ganguly reached the figure in 74, with South Africa's Graeme Smith managing it in 83."
Extraordinary. A whip of the wrists and De Villiers has hit Benn over extra cover for six. Back to back fours follow. And that's his fifty off 30 balls. One day they'll make a movie about this guy. But who would you cast in his role? That's 72 runs off the batting powerplay - the highest of this tournament.
The Windies are starting to get ragged now, just when they need cool heads. Taylor sends down a leg side wide. Then a ball sits up outside off stump and Rossouw jumps off his toes and launches it over point for six to bring up his second ODI fifty. He also scored two hundreds against the Windies in January.
Kalika Mehta
BBC Sport in Sydney
Image source, Reuters"Cricket isn't the only thing on the minds of those sat in the crowd today. A group of South African fans had a rather heated debate about Andre Russell's hairstyle. One was insistent it was the best of any player in the entire tournament, while another said if he were his child, he'd force him to shave it all off. Who knew a mohawk could be so divisive?"
Barry Richards
Ex-South Africa batsman on BBC Test Match Special
"It is exquisite from De Villiers. The timing is extraordinary and his head barely moves. When he hits it, unless it is right next to the fielder, it is four runs.
De Villiers has taken the bait. Back to back fours, the first over the bowler's head, the second pulverised through the covers. When this man hits it, it really does stay hit.
Loose from Taylor. A low full toss and Rossouw leathers it through cover for four. Then a push for two brings up the SA 200. No ball. Free hit. Rossouw is denied a boundary as he slams the ball into De Villiers's toes. No worries, he makes amends by smacking the next ball for four. The young man has 40 off 26 balls. Keep up AB.
De Villiers is one of those players who scores at a run a ball without appearing to exert himself in the slightest. That's par for him.
So, when does AB go medieval? Last 10 probably? It wasn't so long ago he was scoring a 30-ball ton against this same opposition. The pacey Taylor is treated with respect, dabbed hither and thither before Rossouw pulls the final ball to the rope for four. Strap in for the final 15.
Comedian Andy Zaltzman on Twitter:, external Chris Gayle in this WC: 5wkts in 4 games average 17. Gayle in ODIs prior to this WC, since July 2008: 9wkts in 80 ODIs, average 94.
To say Gayle ambles up to the wicket would probably be an offence to amblers all around the world. It's more of a trot. Anyway, he blots his copybook with a wide in an otherwise tidy over. Time for some drinks in the scorching Sydney sunshine.
Maybe Gayle was unwise to rile up Rilee Rossouw. He swats Sammy for back to back fours in the next over to get the Proteas back on the front foot.
Image source, ReutersChris Gayle is loving life at the moment. Running to retrieve the ball he barges into Rossouw then fixes his opponent with an angry stare. Moments later his face collapses into laughter. Rossouw looks utterly bemused.
Andrew Samson
BBC Test Match Special statistician
South Africa's AB de Villiers has made centuries in each of the last two World Cup meetings between these teams: 146 in 2007 and 107* in 2011.
Chris Gayle needs to score 141 to join Brian Lara and Viv Richards as the only West Indians with 1,000 World Cup runs. He also needs four sixes to become the leading World Cup career six-hitter. He is currently on 28, behind Ricky Ponting (31).
Rilee Rossouw - drafted in for JP Duminy today - is a 25-year-old left-hander playing his 15th ODI. His strategy here seems to be to nudge the singles and give AB de V as much strike as possible. A wise head on young shoulders.
Antony Stewart:, external Chris Gayle. Is there anything he can't do??
There I was thinking to myself that Amla and Du Plessis were treading a very similar path to Dilshan and Sangakkara yesterday, and in the blink of an eye they're both gone. Oh well, it's not all bad news for South Africa. AB De Villiers is in now, and he averages 253 against West Indies in World Cup cricket.
South Africa 146-3 (30 overs)
Not out batsmen: De Villiers 1, Rossouw 1
Fall of wickets: 18-1 (De Kock 12), 145-2 (Du Plessis 62), 146-3 (Amla 65)
Bowling figures: Taylor 5-1-20-0, Holder 5-2-9-1, Russell 4-0-23-0, Samuels 2-0-14-0, Benn 7-0-37-0, Sammy 5-0-32-0, Gayle 2-0-10-2
South Africa won toss
Another one! Chris Gayle is the man with the Midas touch at the moment. He traps Amla slap bang in front of his middle peg and that is plum pie. Two wickets in three balls.
Graeme Swann
Ex-England spinner on BBC Test Match Special
"It is an incredible reaction from the West Indies. Ramdin turned away with pain on his face, shaking his hand. I thought at first Du Plessis had hit Ramdin's hand with the bat. Chris Gayle was the only who jumped to celebrate the wicket. His heart-rate got above about 45."