Novak Djokovic closing in on his greatest ATP rankings achievement

Greatness can be measured by the longevity of success and on that criteria, Djokovic is in a league of his own as he closes in on 400 weeks as world No 1.

Novak Djokovic's Defeat Leaves The Calendar Slam Still Beyond Big Three

Djokovic wins US Open for his 24th Grand Slam title

Djokovic secures year-end No. 1 ranking for record-extending eighth time

Novak Djokovic extends Davis Cup singles winning streak to 21 in a row with win over Norrie

Djokovic vs. Federer GOAT debate: What Novak's Grand Slam loss means for the greatest men's tennis players ever.

Achievements left for Novak Djokovic. Just unreal : r/tennis

Novak Djokovic creating big gap between himself and Rafael Nadal-Roger Federer: Fans react to Serb securing 8th year-end No. 1 ranking

No Athlete Had a Better 2015 Than Novak Djokovic

Is Novak Djokovic's year the best ever in men's tennis?, Novak Djokovic

Novak Djokovic gets his trophy after securing year-end No. 1 ranking for a record-extending 8th time – KXAN Austin

Carlos Alcaraz beats Novak Djokovic to win Wimbledon, his second major trophy : NPR