MELBOURNE: Karen Khachanov, the only player in the men's draw to make successive Grand Slam semifinals in the last two majors, at the US Open in September and then at the Australian Open this fortnight, has been working on his consistency.
The Russian made the last four at Melbourne Park after his opponent Sebastian Korda of the United States retired when trailing 6-7 (5), 3-6, 0-3, having hurt his wrist. The Russian will take on Greece's Stefanos Tsitsipas in the last-four stage. The Greek third seed outplayed Czech Jiri Lehecka 6-3, 7-6 (2), 6-4 later in the evening.
