Sometimes picking a Test match XV and replacements is straightforward but that is never the case when it comes to facing the Springboks, especially in South Africa.
Scotland head coach Gregor Townsend will need to make some big calls while balancing picking the team he wants to play in his way against choosing a side to match up physically to their opponents. The most important call will be in the pack - who starts and who comes on as a replacement which is equally as important in modern international rugby.
Meanwhile, in the backs, the return of Finn Russell also poses some questions after so many performed well in Argentina last time out. Here is our predicted starting XV for this Saturday’s Nations Championship match against South Africa at Loftus Versfeld:
9. Ben White
Another top performance last time out for the Toulon scrum-half with George Horne's impact from the bench a useful weapon in the brutal Pretoria conditions | SNS Group / SRU
10. Finn Russell
Unfortunately for Tom Jordan and Fergus Burke it doesn't matter how well you performed last time out because Russell being fit means he will start. That's how it goes when you've got the world's best to call upon. | SNS Group / SRU
11. Kyle Steyn
Might not have scored a try against Argentina but had one incredible moment with a world class take from a kick chase. It didn't come as a surprise to see either, few wingers in world rugby can match his aerial dominance | SNS Group / SRU
12. Sione Tuipulotu
The skipper put in a huge performance last time out and Scotland will need the same inspiration again and the same ball carrying from midfield against the Boks | SNS Group / SRU