But Morgan, the England captain, felt the wicket was more to blame than the batsmen and praised South Africa's seamers - Kagiso Rabada and Wayne Parnell - for harnessing conditions expertly. "Obviously what cost us was that first hour - a lot of live, green grass on the wicket, but ultimately I thought South Africa bowled beautifully".
It is only fair to focus on the unexpected opportunity which may come the way of at least one of the three replacements in England's squad as they seek to extend their run of one-day global victories to nine in a row with a 3-0 whitewash of South Africa in the final Royal London Series match.
"They made us play a hell of a lot and managed to get the ball moving around".
Despite, the convincing victory, it is England, who claimed the series 2-1 following their wins in the first two games. While Jonny Bairstow engineered a partial recovery, he could not prevent England slipping to their first defeat in nine ODIs.
A long rain interval saw Amla lose concentration and get bowled out for 55 inclusive of 11 boundaries.
They were subsequently bowled out for 153 in only 31.1 overs, before the tourists sealed victory in 28.5 either side of the lunch break in the third and final match of the series.
"He had an instinctive technique and style of play -- it was very basic, nearly 'see ball, hit ball".
More swing from the left-armer found Eoin Morgan's outside edge in his next over, and England's whitewash ambitions were already in jeopardy - all the more so when Alex Hales edged Rabada. "Moeen has pulled up really well; Ben could have played, but it was another day off his feet, and the two bowlers that missed out could have played but it would have meant they were tired again...and we didn't want that going into Thursday's game".
Morgan added: "I have been very impressed with Jonny Bairstow and he never lets us down".
There is some solace for the English faithful in the fact that Mark Wood and Liam Plunkett were rested for the fixture, though they would have hardly helped the batting effort, but slight injuries to Moeen Ali and Ben Stokes will also raise eyebrows, with the European Central Bank being as open and honest as tight-lipped mobster with the extent of their issues.
South Africa fast bowler Kagiso Rabada believes the Proteas can win the Champions Trophy, which starts in the United Kingdom on Thursday, because of the talent they possess in their squad.
"The stats show there's something in it for the first 15 overs, and that's when we want to do some damage", said de Villiers after the coin fell his way for the third time this series. I's just when he's bowling at full tilt.
"He can run around in the field like a mad man", the coach, Trevor Bayliss, told Sky Sports.