For Novak Djokovic it must have felt like some nightmarish fight to the death against a clone of himself on Monday as Chung Hyeon stunned the six-times Australian Open champion with a display ripped straight out of the Serb’s textbook.
The 30-year-old 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 7-6(4) 7-5 7-6(3) and become the first South Korean to reach a grand slam quarter-final where he will face American Tennys Sandgren, reports Reuters.
Time and again during the three hour 21 minute encounter, 14th seed Djokovic had Chung on the run but the world number 58 displayed almost superhuman court coverage to prevail in rallies he had no right to still be involved in.
It is exactly those defensive skills that have earned Djokovic 12 grand slam titles and it was no surprise when, after claiming the biggest scalp of his career, the spectacle-wearing Chung described the Serb as his idol.
Tellingly, Chung won 34 of the 54 rallies that exceeded nine strokes, most memorably when he slid at full-stretch to hook a forehand winner past his opponent to take a 5-3 lead in the third set tiebreak.
It proved the final straw for a weary Djokovic who netted a forehand return on the next point and then shunted a backhand into the tramlines after yet more Chung defiance.
The ice-cool Chung barely celebrated, but after being warmly congratulated by Djokovic he walked across to milk the applause from the sell-out crowd, including a sizeable Korean contingent.