Retired hooker Schalk Brits has received a surprise call up to the South Africa squad from Rassie Erasmus.
Brits called time on his career last month following a nine-year stay at Premiership champions Saracens, but has been added to the Springboks group for the second Test against England.
The 37-year-old has made 10 Test appearances for South Africa, the last of which came at the 2015 Rugby World Cup, and linked up with the team in Bloemfontein on Monday.
"We are busy with building experience, continuity and capacity towards the Rugby World Cup, so we want our young players rubbing shoulders with experienced players such as Duane Vermeulen and Willie le Roux," said Erasmus in a statement.
"I want Schalk to perform a similar role, because he has extensive inside knowledge and plenty of experience from playing for Saracens in the English and European conditions.
"It's a great way for our younger guys to learn the trade of international rugby from these guys."
South Africa came from 21 points down to defeat England 42-39 in a thrilling first Test at Ellis Park on Saturday.
Erasmus cut seven players from his team – initially 43-men strong – in the aftermath, while Bulls prop Trevor Nyakane withdrew with a rib injury.