What is Scotland's first-choice defensive pairing?
Since the glory of November, Steve Clarke has lived in a managerial no-man's land. Time to think but no games to turn his thoughts into action. Watching his players every week but without a chance to coach them.
At last, he's got them to himself again. A camp, matches against Japan at Hampden on Saturday and Ivory Coast in Liverpool on Tuesday, and some decisions to make. One of those areas is at centre-back.
Partly by design and in other part by circumstance, the Scotland head coach changed, or had to change, his defensive pairing for every game during World Cup qualifying. He started with Grant Hanley and John Souttar in Copenhagen. Then it was Scott McKenna and Souttar against Belarus.
Back to Hanley and Souttar against Greece. Then McKenna and Jack Hendry against Belarus at home. And a return to Hanley and Souttar against Greece away.
For the famous night that clinched World Cup qualification against Denmark, it was supposed to be Souttar and McKenna, but that had to be broken up before kick-off when the Rangers defender was forced out of the game with injury. Hanley was parachuted back in. Watch on BBC Scotland, iPlayer & the BBC Sport website & app; listen on BBC Radio Scotland & Sounds; follow live coverage online How does it look now that we're inching towards June and Haiti in Boston?