Jacques Nienaber’s charges kicked off their World Cup with an 18-3 victory on Sunday evening after two tries from Pieter-Steph du Toit and Kurt-Lee Arendse in the third quarter took the game away from the Scots following a tightly contested first half.
The defeat leaves Gregor Townsend’s side with no margin for error in their remaining three matches against Tonga, Romania and Ireland if they are to qualify for the quarter-finals.
The two sides came into the tournament in confident mood following encouraging summer campaigns which left South Africa ranked second and the Scots fifth in the world, but with Ireland – the top-ranked team – also in Pool B, the pressure was on both nations to start with a victory.
The Boks started in a more assured fashion and had a chance to get the scoreboard up and running in the 11th minute when the Scots were deemed to have collapsed the scrum, but Manie Libbok hooked his penalty wide from 40 metres.
The South African stand-off made no such mistake, however, when presented with another opportunity two minutes later after Finn Russell was penalised for a deliberate knock-on as he sent his kick soaring between the posts from a central position 35 metres out.
Tempers flared on the side of the pitch just after the midway point in the first half after Damian de Allende was slammed into touch but referee Angus Gardner – after reviewing the skirmish – spoke to four players, but decided no further action was required.
Libbok doubled the Boks’ lead to six points shortly afterwards with another penalty after Sione Tuipulotu failed to release.
After South Africa lock Eben Etzebeth limped off to be replaced by RG Snyman, Scotland, who had been struggling to get their attacking game going, carved out a brilliant chance to score, but Darcy Graham opted to go himself and ran into trouble when fellow wing Duhan van der Merwe, on his outside, was crying out for a pass and appeared to have a free run to the line.
Despite being unable to impose their game on the Boks, the Scots were generally standing up well to the physical challenge of their opponents and they cut their deficit to three points in the last action of the first half when Finn Russell – who had earlier needed treatment following a bang to the ribs – kicked a penalty from 45 metres right on half-time.
Two minutes after the restart Libbok attempted to kick a penalty from almost five metres inside his own half, but he failed to get enough distance on it and the Scots were able to gather.