Scotland boss Gordon Strachan praised the effort and "spirit" of his side after watching them edge to a 1-0 win over Denmark at Hampden Park on Tuesday.
An early goal from Matt Ritchie made possible by Daniel Agger's error was enough to hand Strachan's men a second consecutive 1-0 victory, although he admits his side were perhaps a little fortunate to come away with the victory, adding that he already has a better idea on how to improve his squad.
"It was like a heavyweight versus a middleweight, but our spirit kept us in it," he told the BBC.
"What have I learned? Players need to be playing regularly. Only Alan Hutton has bucked that trend."
The former Celtic boss was particularly impressed by 18-year-old debutant Kieran Tierney, who put in a solid performance at left-back to keep the visitors at bay.
A man-of-the-match performance from fellow debutant John McGinnn, along with a first international appearance from the bench from Nottingham Forest's Oliver Burke, gave Strachan plenty to ponder and he insists the door is always open to any player that reaches a high enough standard.
He added: "We take the fittest, the strongest, the best to the next squad. We'll definitely get better."
The result will be a welcome boost for Scotland, who continue their momentum ahead of trips to France and Italy in May before beginning their World Cup Qualifying campaign away to Malta in September.
Get the best features, fun and footballing frolics straight to your inbox every week.
Thank you for signing up to Four Four Two. You will receive a verification email shortly.
There was a problem. Please refresh the page and try again.