Warburton injury blow for Wales
Wales flanker Sam Warburton will be sidelined for two to three weeks after suffering a torn calf muscle.
The Cardiff Blues forward, who started in Saturday's 25-16 defeat against Australia, is set to miss Wales' remaining three autumn internationals against South Africa, Fiji and New Zealand.
It was better news for Wales with full-back Lee Byrne and back-row forward Ryan Jones both returning to training after missing the Wallabies defeat through injuries.
Wales team physiotherapist Mark Davies said: "Sam has a grade two tear to his calf and will now be two to three weeks in recovery.
"Lee and Ryan both took an active part in training this morning (Tuesday) and will be monitored throughout the week, but both should be available to the coaches for selection before the weekend."
Byrne missed the Australia game after breaking a bone in his hand, but if he is fit for the Springboks clash on Saturday then it would enable Wales coach Warren Gatland to move attacking catalyst James Hook from 15 to centre, or possibly fly-half.
Warburton's absence is likely to mean a recall for 96 times-capped Martyn Williams, who was on replacement duty against Australia.
Gatland is due to announce his starting line-up on Thursday, with Wales bidding for a first win against South Africa since 1999, having lost the last 11 meetings.