De Klerk, electric all season for the Sharks, helped set up S'busiso Nkosi for two tries before Le Roux crashed over minutes before the break.
In any case, as I say, I think Eddie Jones will take the positives.
England's captain Owen Farrell gestures during the first test rugby match between South Africa and England at Ellis Park stadium in Johannesburg, South Africa, Saturday, June 9, 2018.
England head coach Jones, who was verbally abused by Springboks fans in the tunnel after the match, said: 'South Africa have used a get out of jail card and sometimes you don't get that again.
Saracens' Maro Itoje and Leicester Tigers' Jonny May both scored tries late on but South Africa managed to hold on and complete an incredible turnaround.
The loss at Ellis Park was a fourth straight in tests and fifth overall for England. England was dominant once more in the last 10 minutes and scored two late tries. We started the game well. Pollard extended South Africa's advantage with a penalty, though the fly-half's effort was sandwiched between two misses that kept England in touch.
"We will have to try a few things next week and we will have to make big calls going forward, which probably means we'll lose some matches, but we have to get players exposed to test rugby and see if they have what it takes to make it at this level".
Match Report: South Africa 42 England 39
"Credit to the new caps, because they didn't panic and showed they just wanted to play, so we chose to take control of the game and it worked", the loose forward added after his side overcame a 21-point deficit to triumph.
Erasmus' side showed that if every player reaches the required intensity, no team, not even England with their superior squad depth, will roll them over.
Supporters leaned over the railings and verbally insulted Jones as he walked down the tunnel at the end of the first Test, Press Association Sport understands. Farrell converted them all and kicked a penalty for 24-3 to England after 16 minutes. "There was a lot of young guys on the park.it could have gone really bad for us".
"That might have been the cause of some uncharacteristic individual discipline errors which allowed South Africa back into the game and they were able to piggy-back off 17 penalties to establish a lead".
But Kolisi remained cool, rallied his troops and with scrum-half Faf de Klerk playing a starring role, a magnificent comeback ensued in which the home team scored four tries to grab a 29-24 advantage.
The dream debut continued when he popped up on the opposite wing after a clever run from Le Roux, creating the space for fellow debutant Aphiwe Dyantyi to send him over.
England finished the stronger of the sides as Itoje stretched over the ruck to reduce South Africa's lead to 39-32 and then May ran though the home defence to leave the Boks three points ahead with one minute left.