England moved into a 2-1 series lead over South Africa and Joe Root saluted the contribution of their young players.
Keshav Maharaj belatedly delayed England with some big hitting, but South Africa were beaten by an innings and 53 runs at St George's Park.
England captain Joe Root took four wickets, and fast bowler Mark Wood could only admire as the part-time off-spinner tormented South Africa.
Captain Joe Root is better known for his batting, but his bowling masterclass left England four wickets from victory in the third Test.
When is a declaration not a declaration? England answered the question on Friday after the decision to give Mark Wood out was overturned.
Joe Root said Mark Wood is "fit and firing" after earning selection for England's third Test in South Africa.
Mark Wood and Jofra Archer are fitness doubts for England's third Test against South Africa, with Joe Root vowing not to take any risks.
Illness and injury have affected England during their tour of South Africa and Joe Root has been struck by illness again.
England seized control of the second Test with a composed performance on Sunday, Dom Sibley the star of the show in Cape Town.
Although England were ultimately well beaten at Centurion, Joe Root was satisfied with the character his side showed in tough circumstances.