"Well it's a deep sense of satisfaction", Federer told reporters after his milestone victory.
Men may come and men may go, but the GOAT goes on for ever.
"Sometimes at the beginning you get there just because you play so well".
Federer surpasses Andre Agassi, who held the top spot aged 33 years and 131 days in 2003, as the oldest man to claim the world number one spot. Pete Sampras is a distant second with 286 weeks at the top. "Roger will win at Wimbledon again and have a good fall and I can't see anybody passing him", she said.
With his return to the top of rankings, Federer added another feather to his illustrious cap - becoming the oldest world number one at 36 years 195 days.
Federer, who won his 20th Grand Slam in the Australian Open last month, became the number one for the first time in February 2004, and in this way he made a new record for the longest interval between being one of the first and his achievements of the present.
Although Roger Federer might not be literally close to old age, he is certainly nearing the twilight of his illustrious career, but going by form and fitness, the maestro is far from being over with his heroics on the tennis court.
"It was great that I had to play for it this week", he said.
"This is an exciting challenge, I've struggled to try and get there".
Federer admitted he was taking his status as the new top dog in his stride.
"The goal (this time) was to be world No. 1 for a week, that's plenty for me", he said. No. 1 is a tough place to get to. The eight-time grand slam title victor writes, "36 years 195 days.@RogerFederer continues to raise the bar in our sport".
What can you not expect the legendary Roger Federer not to do?
The man himself was happy to be part of a great day for his country.
Top seed Federer, who notched his 14th win from 15 matches against Seppi, will take on second seed Dimitrov in the final on Sunday.