Roger Federer is not the oldest men’s player to hold the number one spot.
Federer continued his fantastic 2017 form by winning the Australian Open last month to close the ATP World rankings gap to Rafael Nadal to 155 points.
And the Swiss star won the Rotterdam Open over the weekend to leapfrog Nadal to the top of the men’s game and become the oldest player to hold such an honour.
Federer, 36, beat Andre Agassi’s record which stood at 33 years old.
But recent findings have revealed that the 20-time Grand Slam winner is not the oldest man of all time to be the best player in the world.
As published by Tennis World USA, the Association of Tennis Professionals was set up in 1973 and that is when the records began to be collated.
But there is over 100 years of sporting action that proceeded but has seemingly been written off.
American Bill Tilden dominated tennis in the early 1920s – winning two Wimbledon titles and six US Opens.
However, it was when Tilden reached the grand age of 38, reports suggested he had his most successful spell.
Federer beat Grigor Dimitrov to win the Rotterdam Open.
That would make him two years older than Federer and hence putting doubts on the Swiss’ honour.
Australian Ken Rosewall was named the world No1 in 1971 by a panel of 10 journalists after winning his hometown Grand Slam.
At the time, Rosewall was nearing his 37th birthday, which also makes him older than Federer is currently.