The England cricket side is on the brink of victory as South Africa collapsed on the fourth day of the second test in Durban.
South Africa, trailing by 232 runs on the first innings, were 76-6 when bad light gave the home team a reprieve.
The hosts will resume needing 156 to avoid an innings defeat.
Off-spinner Graeme Swann and fast bowler Stuart Broad took three wickets each as South Africa's top six batsmen were blown away in less than an hour of play on either side of tea.
Earlier in the day England took their first innings total to 575 for 9 declared with Ian Bell hitting 141.