Over his legendary tennis career, it has always been foolish to write off 24-time Grand Slam title winner Novak Djokovic.

Novak Djokovic was beaten 7-6 (6), 6-3 by big-serving Reilly Opelka in the Brisbane International quarterfinals on Friday.

Novak Djokovic's hunt for a landmark 100th ATP title ended with a whimper following an unexpected 7-6(6) 6-3 defeat by ...

Djokovic is in search of his 25th Grand Slam title at the Australian Open, but fell short of the semifinals at his warm-up ...

Recap, quotes, and highlights from Reilly Opelka's upset victory over Novak Djokovic in the Brisbane International.

Top seed Novak Djokovic is out of the Brisbane International, beaten 7-6 (8-6) 6-3 in the quarter-finals by Reilly Opelka.

Thus, Djokovic experienced his worst defeat in terms of the opponent's ranking since the retirement against Filip Krajinovic ...

Novak Djokovic sent a brief message to his opponent after crashing out of the Brisbane International. Reilly Opelka pulled ...

Novak Djokovic 's preparations for the Australian Open have been rocked after he suffered a shock loss to Riley Opelka at the ...

The 24-time Grand Slam champion lost fairly handily to 6-foot-11 American Reilly Opelka, 7-6 (6), 6-3, in the quarterfinals ...

Novak Djokovic has sent a message to former coach Goran Ivanisevic, with whom he parted ways in March last year after nearly ...