Djokovic had joined Pilic's academy in Germany when he was 12.
After his defeat in the semi-finals of the Shanghai Masters 1000 against Valentin Vacherot on October 11, the 38-year-old skipped the Paris Masters, which ended on Sunday.
The Italian first claimed the number one ranking in June last year and held it for 65 weeks until he lost the US Open title-match to Alcaraz in September.
Frenchman Nicolas Mahut delivered an emotional farewell to professional tennis after his doubles defeat at the Paris Masters.
The six-time Grand Slam champion has failed to win the Paris Masters in five attempts and now faces losing his place atop the rankings should rival Jannik Sinner win the tournament.
Jannik Sinner said Tuesday that he had come to terms with finishing the season behind rival Carlos Alcaraz in the rankings.
Jannik Sinner clinched his fourth title of the season on Sunday as the Italian rallied from a set down to beat Alexander Zverev in the final of the Vienna Open.
Jannik Sinner beat Alex de Minaur in straight sets at the Vienna Open on Saturday to reach his eighth final of the year.
The 17-year-old was beaten 6-1, 6-4 by Thailand’s Ariyaphol Leekul at the National Tennis Complex in Ramna, just six days after claiming the boy’s singles crown at the ITF World Tennis Tour Junior J30 in Rajshahi.
Bangladeshi young tennis star Zarif Abrar has continued his dream run at the 35th Bangladesh World Tennis Tour Juniors J-30, Dhaka, securing his place in the semifinals after a thrilling quarter-final victory, defeating India's second-seeded player Shounak Chatterjee 2-1.
World number one Aryna Sabalenka told AFP that she needs to improve her tennis "in literally everything" and how Novak Djokovic is helping her do it on and off the court.
The 24-time Grand Slam champion said he shared mutual respect with Nadal and Roger Federer, but closeness was never possible among fierce competitors.
World number 204 Valentin Vacherot on Sunday beat his cousin Arthur Rinderknech to win the Shanghai Masters 4-6, 6-3, 6-3 and become the lowest-ranked champion in the history of ATP 1000 events.
The 35th Bangladesh World Tennis Tour Junior J-30, Dhaka featuring participants from 12 nations officially commenced with a grand opening ceremony at the National Tennis Complex in Ramna on Saturday.
Djokovic took medical timeouts during both sets.
Bangladesh's promising youngster Zarif Abrar has become the first tennis player from the country to clinch a title in ITF World Tennis Tour Juniors J-30 group by winning the single's event in the Rajshahi World Tennis Tour Juniors J30 competition at the Rajshahi Complex on Friday.
The 35th Bangladesh World Junior (U-18) Tennis Tour J-30, approved by the International Tennis Federation (ITF), is set to get underway on Saturday at the National Tennis Complex in Ramna
Bold swings and cheeky dropshots can earn amateur tennis players bragging rights and a million-dollar payday when they take on top professionals in a single-point showdown ahead of next year's Australian Open main draw.
