MELBOURNE - Stefanos Tsitsipas reached the Australian Open semi-finals for the fourth time as the Greek saw off rising Czech Jiri Lehecka 6-3 7-6(2) 6-4 on Tuesday.
The third seed dominated the opening set after breaking a nervy Lehecka early on but was pushed hard after that against the 21-year-old who has enjoyed a breakout tournament.
Lehecka, who had never won a Grand Slam match before arriving in Melbourne, used his powerful baseline game to stay with Tsitsipas in the second set but the Greek raised his game to ease through the tiebreak.
Tsitsipas was forced to save three successive break points at 3-3 in the third set as Lehecka threatened to extend the Rod Laver Arena clash.
The 24-year-old then pounced with Lehecka serving at 4-5, reaching match point with a searing backhand pass and wrapping up victory as his opponent netted a backhand.
Tsitsipas will face Russian Karen Khachanov in the semi-final.
(Reporting by Martyn Herman Editing by Christian Radnedge)