Novak Djokovic boosted his chances of finishing the season as world number one when he became the first player to retain his Paris Masters title with a 6-2, 6-3 win over big-serving Canadian Milos Raonic in the final on Sunday.
Djokovic, who has ruled like no other on Rod Laver Arena simply had no answer as Chung, nine years his junior, wore him into the ground to win.
Novak Djokovic's hopes of a calendar year Grand Slam are hanging by a thread as he slipped two sets down to big-serving American Sam Querrey before rain stopped their Wimbledon third- round clash in London, on Friday.
Holder Novak Djokovic had to combat Sergiy Stakhovsky's aggressive serve and volley game to reach the Dubai Championship quarter-finals Wednesday, and next faces a baseline barrage from compatriot Janko Tipsarevic.
Novak Djokovic is capable of extending his record for holding the men's World No. 1 ranking for most weeks to 400, said Russia's Daniil Medvedev who will climb up to a career-best ranking of second on Monday.
The world No 1 is certainly buoyed by the prospect of emulating his achievement of holding all four majors but knows that nothing less than perfection will be required.
'I'm not vaccinated and I'm not planning to get vaccinated so the only good news I can have is them removing the mandated green vaccine card'
Novak Djokovic claimed a fourth Wimbledon title in ruthless fashion as he beat giant South African Kevin Anderson 6-2, 6-2, 7-6(3) on a sweltering Centre Court.
All players who want a visa to compete in the Australian Open will need to be fully vaccinated for COVID-19, the country's immigration minister said on Wednesday, putting Novak Djokovic's title defence and Grand Slam record bid in doubt.
Australian Nick Kyrgios served like a demon to bounce Serbia's world number two Novak Djokovic out of the quarter-finals of the Acapulco International with a 7-6(9), 7-5 victory on Friday.
Australian Open champion Novak Djokovic and third seed Andy Murray both had to work much harder than expected to book their places in the third round of the BNP Paribas Open on Sunday.
Top seed Novak Djokovic was tested by net-charging Spaniard Feliciano Lopez in a duel of volleys and passing shots before booking a berth in the semi-finals of the US Open in the wee hours of Wednesday.
Novak Djokovic says the decision to begin working with Andre Agassi came after he realised something had to change if he was to maintain a level of success throughout his career.
World number one Carlos Alcaraz is the new big thing in men's tennis but says Novak Djokovic remains the favourite.
Novak Djokovic confirmed he will be coached by Andre Agassi at the French Open after being humbled by German youngster Alexander Zverev in the final of the Italian Open on Sunday.
Novak Djokovic refused to be downhearted after his Wimbledon title defence ended in semi-final defeat by an inspired Roger Federer on Centre Court on Friday.
World number one Novak Djokovic has disclosed that his sudden slump in form was due to ' private issues' and not because of a lingering wrist injury.
Novak Djokovic said he expects a "great battle" against Italian powerhouse Matteo Berrettini in Sunday's Wimbledon final when victory will earn the Serb a record-equalling 20th Grand Slam title.