No, it should not be cast in stone, but we do need to figure out some positional stability in the top order. Openers are set. 3 and 4 are not, though I see SN occupying no.3 and Rok no.4. Sakib likes no.6, but I doubt Mushy comes in at his customary no.7 in tests. He is a man in form. So, I think he will come no.5 and make it his own. Plus, Riyad is out.