Novak Djokovic wanted to start his season on a high note but unfortunately, Reilly Opelka defeated him in the quarterfinals at the Brisbane International.

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

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

Did anyone expect Novak Djokovic's comfortable victory over Reilly Opelka in Brisbane? Certainly not! However, the Serb was the massive favorite in the quarter-final. Still, Reilly stunned Novak 7-6, 6-3, securing a place in the semi-final!

Novak Djokovic (No. 7 ranking) will meet Reilly Opelka (No. 293) in the quarterfinals at the Brisbane International Presented by Evie on Friday, January 3.Djokovic’s last action was on

Here's what Reilly Opelka told Novak Djokovic at the net after his stunning upset win vs. the World No. 7 at the Brisbane International.

Novak Djokovic has dominated the ATP Tour throughout large chunks of his career, and that is particularly the case when it comes to facing American players. The Serbian has met players from the United States on 96 occasions and has won an impressive 85 of those matches,