Novak Djokovic, Rafael Nadal, and Roger Federer are the three players that have been no. 1 throughout 2018, and have shared the top three spots for seven occasions since 2014.
In addition to the achievements of the top three players, ATP Tour stated on its website that there were five changes in the top ten places. Among them, we find the finalist of the AMT 2018, the South African Kevin Anderson (No. 6), and the American John Isner (No. 10), who ends the season inside the top ten for the first time.
Between the players who returned to the top ten in 2018 are Djokovic (who finished 12th in 2017), Juan Martin del Potro, and Kei Nishikori (who went up from No. 22 to No. 9).
ATP Tour also points out that for the first time in the history of the world rankings, there are players from five different regions of the planet. There are six players from Europe, while Africa, Asia, North America, and South America have only one representative each.
ATP Tour 2018 season highlights:
There is a record of 7 players that are 30 years or older in the Top 10. There are also five players that are 23 or younger finishing with their best outcome in the rankings yet, between No. 11 and No. 20. The group is led by No. 11 Karen Khachanov (22), No. 12 Borna Coric (22), No. 14 Kyle Edmund (23), No. 15 Stefanos Tsitsipas (20), and No. 16 Daniil Medvedev (22).