Robertson gets the full guard of honour for cap 100

Steve Clarke, Alex McLeish and Gordon Strachan all made the walk out before the 7:45pm BST kick-off to hand Robertson a framed shirt, a small ceremony marking a century of caps for Scotland's long-serving left-back. Three managers, three different Scotland sides, one player who outlasted all of their reigns and kept turning up anyway.

Robertson has played under each of the men who presented him that shirt. McLeish and Strachan capped him earlier in his career, before the move to Liverpool turned him into one of the Premier League's most reliable left-backs. Clarke has worked with him for the bulk of the century since. Having all three on the pitch together reflects how long Robertson has been a fixture for Scotland, regardless of who happened to be picking the side at the time.

A fixture across three regimes

McLeish and Strachan knew Robertson as a young squad player finding his feet. Clarke has had him as a senior figure for years since. That arc, from fringe selection to a player three separate managers wanted to honour in person, is what Tuesday's presentation was built around.

The Guardian's live coverage of the night flagged the presentation briefly among a broader round of Nations League updates involving Croatia and Spain elsewhere on the continent, which tells you something too: for Scotland, this wasn't the only game in town, but Robertson's milestone still earned its own moment before a ball was kicked.

Why it lands now

Hitting 100 caps is rare enough. Doing it with three separate managers willing to show up for it is the part that stands out, evidence that Robertson has made himself a constant regardless of who's in the dugout. Slovenia were the opponents in the record books, but the night belonged to a Scotland career that has quietly spanned three different eras of the national team.