Ten years ago, very few tennis fans - if any - would have predicted that Andy Murray would end up as the world number one in 2016.
While the Scot was clearly talented, people doubted whether he possessed either the ability or the temperament to reach the very top of his profession.
That Roger Federer, Rafael Nadal and Novak Djokovic were all on the scene and improving with each passing year made Murray’s task of becoming the greatest men’s tennis player in the world seem nigh-on impossible.
However, thanks to years of hard work, Murray has made the seemingly impossible possible.
Thanks to his victory over Djokovic in the ATP World Tour Finals on Sunday, the 29-year-old ends 2016 number one in the rankings. A truly remarkable feat.
"Andy is definitely number one in the world," Djokovic said, per BBC Sport, after the match. "He deserved to win. He is the best player.”
2016 has been an incredible year for Murray
It’s been another incredible year for Murray, who finished as the runner-up in the French Open in June before winning Wimbledon for the second time in his career a month later.
He then went on to win an Olympic gold medal, beating Argentina’s Juan Martin del Potro in the final.
By beating Djokovic at the O2 Arena over the weekend, Murray extended his career-best winning run to 24 matches.
And all this despite the fact he became a father for the first time at the start of the year.
Judy Murray posts first newspaper article about Andy
To celebrate her son’s achievements, Judy Murray posted a newspaper clipping from back in 1993 on Twitter on Monday morning.
It says that Murray, aged 6, “became the youngest player to win a match in a Scottish ranking tournament” after reaching the second round of the 12-and-under singles at the Waverley Junior Open.
The youngster reportedly “displayed remarkable tactical awareness” to defeat Ryan Openshaw.
And now Twitter is wondering what happened to Ryan Openshaw…
Is Andy Murray a contender for greatest British sportsperson ever? Have your say by leaving a comment below.