As I said, repeatedly Strachan leaves out players he should include and includes some beyond baffling selections.
Martin out and Greer out are both obvious ones.
McCormack and Cooper/A young cb - Bearing in mind Martin, Hanley & Berra are 1st, 2nd and 3rd choice. Souttar is probably the prime candidate after Cooper.
The selection of McGinn is a tad strange, playing at a low level and untried. However he's young so it's interesting to see what he can bring.
If you think Strachans squad selections are correct and he isn't stubborn and short sightened with what he's doing then you're in a minority.