SYDNEY (Reuters) - Australia young guns Darcy Swain and Len Ikitau are convinced the back-to-back wins over world champions South Africa will be quickly forgotten if the Wallabies don't beat Argentina in the Rugby Championship this weekend.

Ikitau cemented his burgeoning reputation by scoring his first international tries with a brace against the Springboks last Saturday, while lock Swain came off the bench to win his seventh cap in the 30-17 victory in Brisbane.