7 Novak Djokovic records which may never be broken

'Career Golden Masters' - winner of all 9 elite ATP tournaments

Djokovic holding the Western & Southern Open trophy in 2018

Djokovic became the first player in the 28-year history of the ATP Masters 1000s to win all nine elite tournaments. He did so by beating Roger Federer at the Western and Southern Open in Cincinnati in 2018.

The Cincinnati Masters had eluded Djokovic for quite a few years. He had finished a runner-up here on five different occasions before he finally tasted success in 2018.