The 3rd seed made it six from six within the closing 8 at majors with a 6-3 7-6 (2) 6-4 victory over 21-year-old Lehecka, who had by no means gained a grand slam fit sooner than arriving in Australia.
The younger Czech had defeated Cameron Norrie and Felix Auger-Aliassime to make the closing 8 however used to be damaged in his first carrier recreation and, even supposing he placed on a creditable show, it used to be now not sufficient to take a suite from Tsitsipas.
Previous, Khachanov reached a 2nd consecutive slam semi-final after Sebastian Korda retired with a wrist harm when trailing 7-6 (5) 6-3 3-0.
The 22-year-old American has been probably the most tales of the event, defeating Daniil Medvedev and Hubert Hurkacz to achieve a primary slam quarter-final 25 years after his father Petr lifted the trophy.
However he took a scientific time-out after 5 video games of the second one set to have his wrist taped and referred to as it quits after dropping the following seven video games.
Korda mentioned of the harm: “I had it a bit bit in Adelaide a pair weeks in the past however then it went away. All the way through the suits, it used to be utterly superb. Then, only one roughly mis-hit go back and it began to hassle me so much after that.
“Some forehands, I couldn’t even dangle the racket. Volleying used to be nearly unattainable for me. So it used to be a bit tricky.”
It has however been a leap forward fortnight for Korda, and he added: “There’s numerous positives, far more positives than negatives. These days used to be tricky however optimistically it’s not anything critical and I will handle it so I don’t have it sooner or later.
“I’m actually happy with myself. Going ahead, I’m going to stay on seeking to do the similar factor, stay on mentally being the similar approach. I believe I will perform a little actually large issues within the close to long term.”
Khachanov has lagged in the back of his fellow Russians Medvedev and Andrey Rublev – who will tackle Djokovic within the quarter-finals on Wednesday – however went additional than each at the United States Open and it may well be the similar tale right here.
“Daniil used to be in entrance folks, me and Andrey, however nonetheless, Andrey used to be most sensible 10,” mentioned Khachanov. “I used to be most sensible 20, most sensible 15. At one level I believe I dropped to twenty-five or 28, in 2021, that used to be the instant the place I had some private problems and more difficult instances, let’s say.
“No longer the whole lot used to be going as easy however I all the time consider in myself and my skills and what I wish to do with a view to be at my perfect.
“So I believe with my crew, we’re at the proper path and I believe this sort of festival in a favorable approach between us is helping us to get well.”