Stefanos Tsitsipas is into his fourth Australian Open semi-final in five years after a 6-3 7-6(2) 6-4 victory over Jiri Lehecka.
Tsitsipas produced some really good tennis as he neutralised the power of Lehecka to seal a straight sets victory.
The Czech Republican produced a solid level but not enough to trouble the third seed.
Tsitsipas will play his fourth semi-final in five years against Karen Khachanov, who defeated Sebastian Korda earlier in the day.
The Greek made his intentions clear early into the contest as he secured a long break of serve and secured a 2-0 love lead with some brutal baseline hitting.
Tsitsipas continued the momentum into the rest of the set as he refused to let Lehecka settle into the match.
Lehecka, who had already knocked out Borna Coric, Cameron Norrie and Felix Auger-Aliassime, eventually found rhythm on serve and got on the board in the opening set.
However at that point it was too late as Tsitsipas continued to storm through his service games as he secured the opening set in 37 minutes.
In the second set, a much higher level was produced from Lehecka who cruised through his opening service game and was starting to grind out the big points.
Tsitsipas was forced into some bold shot-making in the fourth game as he was forced to save five break points as he held for 2-2.
A true test of Tsitsipas’ mentality was about to be shown as Lehecka had gained confidence from the baseline as well as finishing points at the net.
The world number 71 showed the type of tennis that took him to a first Grand Slam quarter-final as he took the match to Tsitsipas.
However the Greek upped his level of play as in the tiebreak he was dominated through the tiebreak as he stormed to a 4-0 lead.
Tsitsipas never really let go of the lead as more clean serving saw him close out the tiebreak 7-2 and take a two set lead.
The third set saw both players maintain a high level of consistency with neither player giving anything away.
Once again it was Tsitsipas’ serve who was tested first with the Czech Republican going for broke in the seventh game and being 0-40 up on the Greek’s serve.
However Tsitsipas was too strong on serve as he closed out the 4-3 lead. Then there was an incident where the world number four was close from being defaulted after being close to hitting a ball-kid.
In the end Tsitsipas kept his emotions and broke on his first opportunity to seal the win and a place in the last four.
Next for Tsitsipas will be Karen Khachanov and the Greek will look to make his first Australian Open final in four attempts.
