How Novak Djokovic compares to Tennis greats after setting new rankings record

Perhaps the most remarkable aspect of Djokovic's dominance is how the 36-year-old has stayed at the top so long.

Djokovic's ATP Finals win on Sunday rubber-stamps him as the year-end world number one for a record eighth time.

Novak Djokovic's ATP Finals win on Sunday rubber-stamped him as the year-end world number one for a record eighth time and took him to 400 total weeks at the top of the rankings.

Here, the PA news agency looks at how his record compares to the greats of the game.