The feeling out there is that this Championship will be the real test for Erasmus and his team and it all start with Argentina this coming Saturday.
Erasmus has named a different team from the England series with Etzebeth and Malherbe starting with none or very little real game time.
It looks like Erasmus went with combinations to start the championship picking Etzebeth and Du Toit at lock, De Klerk and Pollard (his choice in England series) at nine and ten and Esterhuizen and Am in the midfield.
The team has a combine 438 test caps which sees a mix between experience and new players in this competition.
Playing Argentina has change over the years as they were a forward dominate team but that has changed to a good pack with great flair in the backs.
Easy it will not be and the Argentinians have a new coach at test level with the confidence that they have beaten the Springboks at home at the same venue a few years ago.
Argentina went with a strong front row in Figallo, Agustin Creevy and Nahuel Tetaz Chaparro.
It will be a huge battle with Beast, Marx and Malherbe and may be the biggest factor in winning or loosing.
There are concern on Etzebeth straight into the starting team not playing any rugby this year so far but Rassie has stick to his guns in giving him game time as soon as possible.
That said with that selection Erasmus had no place for Mostert or Snyman in his match 23. Orie will cover at lock and only van Staaden on the bench for the newly trio in Whiteley, Kolisi and Louw.
The Argentinian coach has opted to go with Tomas Lavanini, while Marcos Kremer will be at flanker to counter the Springbok trio.
Argentina will have Bautista Ezcurra and Matias Moroni in the midfield Ramiro Moyano on the wing.
The Springboks have some exciting backs, the question will just be what game will they go out and play
Defence will be crucial like in any test match and something the Boks were not able to manage well against England in June.
There is enough speed out wide for Erasmus but speed needs good quality ball and that will be like gold on Saturday.
It will all start at the set pieces and dominance in those department will go a long way in winning this test match.
With a new loose trio combination, Marx will have to add to the breakdown and in slowing the Argentinian ball down.
They have shown in Super Rugby and test that they are dangerous from broken play and turnover ball.
Erasmus have also opted to give the young Willemse a chance to cover at 10 and 15 ahead of Jantjies. Suppose it is less than a gamble to do it against Argentina than the All Blacks.
There are four players in the starting line-up who will play in their first Castle Lager Rugby Championship test, Makazole Mapimpi, Lukhanyo Am, André Esterhuizen and Aphiwe Dyantyi.
South Africa’s overall record against Argentina: Played 26, Won: 23, Lost 2 and draw only which gives them a 88% win record.
Prediction: Springboks by 6 points
Springboks – 15 Willie le Roux, 14 Makazole Mapimpi, 13 Lukhanyo Am, 12 André Esterhuizen, 11 Aphiwe Dyantyi, 10 Handré Pollard, 9 Faf de Klerk, 8 Warren Whiteley, 7 Siya Kolisi (c), 6 Francois Louw, 5 Pieter-Steph du Toit, 4 Eben Etzebeth, 3 Frans Malherbe, 2 Malcolm Marx, 1 Beast Mtawarira.
Replacements: 16 Bongi Mbonambi, 17 Steven Kitshoff, 18 Thomas du Toit, 19 Marvin Orie, 20 Marco van Staden, 21 Embrose Papier, 22 Lionel Mapoe, 23 Damian Willemse.
Argentina: 15 Emiliano Boffelli, 14 Bautista Delguy, 13 Matias Moroni, 12 Bautista Ezcurra, 11 Ramiro Moyano, 10 Nicolas Sanchez, 9 Gonzalo Bertranou, 8 Javier Ortega Desio, 7 Marcos Kremer, 6 Pablo Matera, 5 Matias Alemanno, 4 Guido Petti, 3 Juan Figallo, 2 Agustin Creevy (c), 1 Nahuel Tetaz Chaparro
Replacements: 16 Diego Fortuny, 17 Santiago Garcia Botta, 18 Santiago Medrano, 19 Tomas Lavanini, 20 Tomas Lezana, 21 Martin Landajo, 22 Santiago Gonzalez Iglesias, 23 Juan Cruz Mallia