We can add the footballing full-back to our greatest exports - Scotsman editorial leader

The list of important Scottish exports includes our magnificent whisky, famous foods and - these days - our renewable energy. But to that list perhaps we should add... the footballing full-back.

Aberdeen's Calvin Ramsey is the latest Scottish full-back to rise to prominence, the talented 18-year-old securing his big move to Liverpool yesterday for a fee that may reach £6.5m.

Already at Anfield, of course, is Scotland captain Andy Robertson - rated the finest full-back in the world by many, and valued at more than £50m in the unlikely event he was ever to be sold.

Meanwhile another Scot - Aaron Hickey, once of Hearts and now of Bologna - is expected to make a £20m+ move to Arsenal after a strong season in Serie A. The London side already has former Celtic man Kieran Tierney in their ranks.

Why are we so good at producing full-backs? Many amateur footballers will be familiar with the belief that the weakest players play at full-back - "you're left-back - in the dressing room", goes the old joke.

But that would be to overlook a proud heritage of Scots in the position, including greats such as Maurice Malpas, Sandy Jardine and Danny McGrain.

Maybe we simply appreciate, in the helter-skelter of our national game, there are few sights better than a full-back steaming up the wing, past his opponents on the attack... or steaming into his opponent to win back the ball, when defending.

With its mix of grit, athleticism and artistry, it's the perfect Scottish position. Long may we continue to produce its greatest proponents.