Novak Djokovic recently reacted to a social media post about a bus that had '421' written on it, the number of weeks the Serb has spent as the World No. 1 in the ATP rankings.A total of 28 players have been ranked as the ATP World No. 1 since 1973 but no one has been ranked the World No. 1 for as many weeks as Djokovic. The Serb has been at the top of the rankings for an astonishing 421 weeks and counting. That is 111 weeks more than the player with the second-most weeks at the top, Roger... Read this story
