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.

US Open: Winning calendar Grand Slam would be my greatest achievement – Djokovic

Novak Djokovic wins his 23rd Grand Slam title by beating Casper Ruud in the French Open final

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

Djokovic knows 'history is on the line' at Tokyo Olympics - The San Diego Union-Tribune

Novak Djokovic Ties Federer And Nadal With A 20th Grand Slam; Here's How Their Earnings Stack Up

Novak Djokovic Archives - EssentiallySports

Novak Djokovic one win away from achieving goal bigger to him than winning ATP Finals, Tennis, Sport

Novak Djokovic on Hitting His Prime, Nadal and Federer, and the GOAT Debate - Sports Illustrated

Djokovic ten times a champ The Arkansas Democrat-Gazette - Arkansas' Best News Source

Novak Djokovic: Dubai is a fantastic place for tennis players

Novak Djokovic wins 23rd Grand Slam title by beating Casper Ruud in French Open final – Orlando Sentinel

No. 130 Tomas Machac takes Djokovic the distance, but Novak emerges 13-0 on the young season

Novak Djokovic, Ben Shelton Are US Open's Biggest Winners

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