AUSTRALIAN OPEN: NOVAK DJOKOVIC BEATEN BY UNSEEDED CHUNG HYEON

Novak Djokovic & Chung Hyeon

Hyeon Chung defeated idol Novak Djokovic in straight sets 7-6 7-5 7-6 in a stunning display at Rod Laver Arena.

Chung, 21, become the first Korean player to reach the last eight at a Grand Slam.

He will face another surprise quarter-finalist after American Tennys Sandgren upset fifth seed Dominic Thiem.

The 21-year-old, who downed Alexander Zverev in the third round, shocked the king of Melbourne Park with incredible court coverage and a highlights reel of exceptional returns to skittle his opponent.

The former World No. 1 fought through an elbow niggle throughout the match and eventually succumbed to the Korean star in the final tiebreak.

A particularly eye-catching rally from the pair, which saw Chung return a powerful Djokovic forehand to seal three match points, left Jim Courier with his jaw on the floor.

“I cannot believe what I’m seeing,” Courier said. “I cannot believe how good this kid is.”

Chung’s win saw him become the third man alongside Marat Safin and Roger Federer to defeat Djokovic, a six-time Australian Open champion, in straight sets at Melbourne Park.

“Congratulations to Chung and his team. Amazing performance,” Djokovic said after the match.

“Whenever he was in trouble he came up with some unbelievable passing shots. From the back of the court he was like a wall.

“He showed no weaknesses and played a great match.”