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.
The 20-time Grand Slam champion first achieved the feat of the top-ranked player in men's tennis in 2004 and a lot has happened since then.
Facebook was launched just two days later, while Lionel Messi made his debut for Barcelona.
The first iPhone arrived with Harry Potter and Gangnam Style taking over the world.
Let's not forget Usain Bolt breaking seven world records and winning numerous gold medals.
But during that time, Federer has been busy serving 8049 aces, playing over 1000 matches, winning 85 tiles, sporting several haircuts and raising four kids.
14 years and 17 days later, the Swiss great landed the coveted title as world No 1 again in Rotterdam. What a man!
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