Jeremy Guscott believes the Boks are a tiring unit who will come unstuck against England at Twickenham.
The former British & Irish Lions centre, who kicked the series-winning drop-goal against the Boks in 1997 and then refused to swap jerseys with Percy Montgomery after the match, believes the visitors won’t win their third match on tour.
The Boks have beaten England in their past five meetings since the end of 2006 and although he predicts a physical encounter, he backed the English to win.
“South Africa are running out of steam, but matches between the Boks and England are always huge physical confrontations – they are brutal encounters – and this is not going to be any different,” Guscott told the BBC.
“They may be on their last legs, but they know this is their last game of the season and it will be important for them to go out with a win. Where better to win than Twickenham?
“However, I am just not sure they have enough fuel in the tank to get over this final hurdle,” he said.
If the Boks do surprise Guscott and claim their second consecutive win at Twickenham after the 25-14 victory two years ago, he feels England manager Martin Johnson will be forced to drop players who are not performing.
“Johnson has stuck with this team to give them the opportunity to bounce back after the defeat by Australia and let the players prove to him that they are worthy of selection. He has stuck with players who should have been dropped, such as Danny Cipriani, Phil Vickery and Tom Palmer, and, if England do not win this match, then some players have got to go,” he said.
“They should not be totally discarded but there is competition for places, so give the guys who are champing at the bit the opportunity to prove themselves.”