Andy Murray secured the year end world number one ranking on Sunday after beating long-time rival Novak Djokovic in straight sets in the ATP World Tour Finals final in London.
The Scot has now achieved almost everything there is to achieve in the game and will surely go down as Britain's greatest tennis player of the modern era, when he decides to retire some time down the road.
His rise to the top has been a struggle but he can finally call himself the best player in the world, and rightly so after a phenomenal year in which he has won nine titles, including his second Wimbledon crown and retaining his Olympic title in Rio.
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Murray always showed the promise as a youngster coming through the system in Scotland but it is rare that a young talent breaks through and fulfils their potential to such an extent.
Back in 2001, Murray and his mother Judy, were interviewed by BBC News in a piece that detailed the then 14-year-olds ambitions going forward and it makes for interesting viewing now, having witnessed all that he has achieved.
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The fair-faced younger Murray outlined his goals for the near future saying: "Hopefully I'll be playing in Wimbledon in about four years and junior Wimbledon in two years...that's probably one of my main ambitions to play in."
Murray's coach at the time, Leon Smith, who is now the captain of the Great Britain Davis Cup team said the following on the difficult transition from promising junior to hardened tour pro: "The people you see on television have worked hard all their life, they've given up all social life...it's a tough life, if you really want to make it you've got to give up a lot of your life."
Judy, Andy's mother, who was Scotland's national tennis coach at the time - and has gone on to become Great Britain's Fed Cup coach - noted in her interview that Scotland could soon have a player to rival the likes of Tim Henman.
"I think it's looking a lot more likely...certainly with us having a national centre now and having coaches who can produce at the junior level and backing from the lottery fund for the kids who want to relocate, anything is possible now," she said.
Andy has certainly kicked on from his junior days and lived up to all the promise he showed as a junior, and the Dunblane native can now call himself the world's number one male tennis player.