The Springboks were made to sweat, but ultimately held firm to secure a hard-fought 29–27 victory over Argentina at Twickenham and successfully defend the Rugby Championship title for the first time.
South Africa are on course to become the first country to win three successive men's Rugby World Cups, according to retired Welsh great Dan Biggar.
As the Rugby Championship heads into its last round, the top 10 in the World Rugby rankings could face a dramatic reshuffle before the November internationals.
Springbok captain Siya Kolisi isn't pre-empting any celebrations as his men prepare to compete for back-to-back Rugby Championship titles this weekend.
Despite back-to-back emphatic wins in the Rugby Championship, Springboks head coach Rassie Erasmus says the team is still chasing the "perfect game".
Argentina head coach Felipe Contepomi has made changes for the Rugby Championship rematch against the Springboks at Allianz Stadium on Saturday.