A last-minute penalty by first five Morne Steyn sealed an unimpressive 22-17 win for South Africa over Argentina in a scrappy Rugby Championship Test in Mendoza.
After a humiliating 60-point defeat in Soweto last weekend, the passionate Pumas were the better side for much of the match and led until eight minutes from time.
Steyn slotted two penalties in the closing minutes to keep South Africa top of the table -- level on nine points with New Zealand but ahead on points difference.
South Africa started with the same side that won 73-13 in the first round while Argentina made five changes and still lacked injured skipper and No. 8 Juan Martin Fernandez Lobbe.
Argentina scored 2 tries to 1.