In case your nerves are jangling already, then you definitely're not the one one.
In lower than 24 hours, Scotland will tackle Ukraine at Hampden with a spot within the World Cup playoff ultimate at stake.
And whereas Steve Clarke 's group can usually decide itself lately as a result of settled nature of the squad, that is not fairly the case this time round.
Kieran Tierney's absence is a hammer blow and Clarke confirmed on Tuesday he is been dealt one other main setback - with Nathan Patterson additionally dominated out.
"Everybody besides Nathan (is out there)," Clarke stated. "Nathan has run out of time just a little bit for the primary sport.
"So he will not be concerned within the first sport however everybody else is nice to go."
Each accidents imply some juggling within the again 5 shall be required with Scott McKenna and Liam Cooper the frontrunners to return in and change Tierney.
However neither can progress up the pitch like Tierney can so might Andy Robertson tuck in with Aaron Hickey or Greg Taylor assuming the left wing-back function?
Or might Clarke even change to a again 4 after the Czech Republic defeat at Euro 2020 laid naked Tierney's large affect on the again 5 setup?
On the opposite flank, changing Patterson is a bit more simple with two contenders to step into the wing-back function.
Stephen O'Donnell is the apparent frontrunner as he is a trusted lieutenant to Clarke and stands out as the protected decide for such an enormous sport.
However Celtic defender Anthony Ralston cannot be ignored after a resurgent season in inexperienced and white. He could possibly be a wildcard decide that may deliver power and physicality to what's set to be a battle.
Additional up the pitch, it seems more likely to be Billy Gilmour and Callum McGregor pairing up in midfield with John McGinn supporting Lyndon Dykes and Che Adams in assault.
And it'll virtually actually be Craig Gordon in purpose along with his traditional deputy Jon McLaughlin not chosen this time.
Predicted Scotland XI : Gordon; McTominay, Hanley, Cooper; O’Donnell, Gilmour, McGregor, Robertson; McGinn, Adams; Dykes