London - When Anrich Nortje was selected in the 15-man Proteas squad for the 2019 World Cup with just four ODIs to his name, the argument for his inclusion was that there is no substitute for raw pace.
With the injured Nortje back home nursing a dislocated thumb, South Africa were on the receiving end of exactly that philosophy against England at The Oval on Thursday.
Jofra Archer, on a wicket that England captain Eoin Morgan said was slightly on the slow side, clocked speeds of above 150 kph.
He finished with figures of 3/27 from his seven overs, but he had already gone a long way towards bowling South Africa out of the game in a devastating five-over spell up front.
Before he had even taken a wicket, Archer had Proteas stalwart Hashim Amla retired hurt on 5 with a devastating bouncer that went crashing into the 36-year-olds front grille.
It was a sickening blow, and Amla was forced to leave the field with a suspected concussion.
Before he returned in the 32nd over, Archer had already bounced out Faf du Plessis and Rassie van der Dussen while he also had Aiden Markram caught at slip.
Archer has made his mark at the World Cup immediately, and he will be a handful for all batsmen that come his way.
Amla was eventually dismissed for 12 when the Proteas cause was already lost, but he effectively lost his wicket when Archer hit him.
Moeen Ali was fielding at fine leg when that incident happened, and speaking after the match he described what he saw.
"It was a very quick delivery and you have to feel for the batsman. I was a little bit surprised he came back out," Ali said.
"We hope he's okay, obviously, and that he's fit enough to play for the rest of the tournament.
"Honestly, I was at fine leg, and that was a rapid delivery. That particular delivery was very fast.
"With Afghanistan in their warm-up games (against England) you could see that he (Archer) just unsettled them and nobody wants to face him."
Van der Dussen also acknowledged that Archer was a "tricky customer".
"I only faced five balls of him and three of them were slower balls," the 30-year-old, who made 50, said.
"It's unfortunate from Hashim's side because he was looking really comfortable and hitting the ball nicely like he did in the first two warm-up games.
"I saw him as he came off and the ball did hit him quite hard. I wasn't sure that he would come back."
The Proteas went on to lose the match by 104 runs. They are next in action when they take on Bangladesh, also at The Oval, on Sunday.
@LloydBurnard is in England covering the 2019 Cricket World Cup for Sport24 ...