The Springbok selectors on Wednesday confirmed the names of 12 players who have been placed on standby should the World Cup squad be affected by injury.
Meanwhile a number of players sat out the first squad training session on Wednesday.
Coach Peter de Villiers said that they were all as the result of bumps and bruises picked up in Saturday's victory over New Zealand.
"If there was a Test match on Saturday, they'd all be available to play - other than Frans Steyn [hamstring] and Patrick Lambie [shoulder]," said de Villiers.
"We'll have a full squad to choose from for the first match of the tournament on September 9."
South Africa's standby squad: Zane Kirchner, Lwazi Mvovo, Wynand Olivier, Elton Jantjies, Charl McLeod, Ashley Johnson, Jean Deysel, Gerhard Mostert, Alistair Hargreaves, Dean Greyling, Werner Kruger, Adriaan Strauss.
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