From fashion to technology and everything in between, a lot has changed since the first time Roger Federer claimed the No 1 ATP Ranking in 2004.
Roger Federer claimed a 20th Grand Slam title at the Australian Open and then became the oldest-ever world No 1 - but is he the greatest sportsperson of all time?
To mark Rivalry Weekend on Sky Sports here's a look at the greatest rivalries in tennis and there have been some classics.
Daniel Altmaier is smart, aggressive and wants to rule the world. Sky Scholar mentor Adam Smith visits the rising tennis star in Germany.
Sky Sports have been delving in the archive books and crunching the numbers in order to find out the secret of Roger Federer's success.
Roger Federer became the oldest world No 1 in tennis history with victory against Robin Haase at the ABN Amro World Tennis Tournament in Rotterdam.
Roger Federer and Caroline Wozniacki left Melbourne as champions after another exhilarating Australian Open while Kyle Edmund was Britain's big storyline.
After claiming his 20th Grand Slam title we look back at the remarkable career of the legendary Roger Federer.
Kyle Edmund has risen to a career-high 26 in the world rankings, we crunch the numbers after his fantastic run to the Australian Open semi-final.
We look at the improvements Kyle Edmund has made after pulling off a stunning win over Grigor Dimitrov to reach the semi-finals of the Australian Open.
We take a look back at Andy Murray's greatest moments as the former world No 1 undergoes surgery on a lingering hip problem.
We look back at the most significant moments in Andy Murray's career following the news he will miss this month's Australian Open through injury.
Who are the youngsters who could make an impact in Melbourne? We pick out five to watch...
You imagine Andy Murray might be watching from afar as he recovers from his hip surgery, encouraging Nick Kyrgios at the Australian Open...
There may be no Andy Murray, but the men's tournament will have no shortage of returning stars who will be chasing Australian Open glory.
With the new season barely underway, attention turns to the Australian Open and who from the women's field will open their campaign with a Grand Slam title.
We look at the leading contenders to win the Australian Open men's singles as Roger Federer attempts to defend his title.
Australian Open Men's Singles Draw: Defending champion Roger Federer retains his title.
Australian Open Women's Singles Draw: Caroline Wozniacki wins maiden Grand Slam title.
With tennis players busy preparing for the start of the new season in 2018, it's time to put your knowledge of the past 12 months to the test.
©2018 Sky UK