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| Karen Khachanov. Reuters |
Second-seeded Karen Khachanov recorded a 6-4, 7-5 win over Fabian Marozsan on Wednesday in the second round of the Qatar ExxonMobil Open in Doha.
Khachanov, of Russia, fired six aces and benefited from three double faults by his opponent to dispatch the Italian in 88 minutes.
Top-seeded Andrey Rublev of Russia cruised past France's Richard Gasquet 6-3, 6-4.
The third seed, Ugo Humbert of France, also sailed through to the quarterfinal round with a 6-4, 6-1 win over Pavel Kotov of Russia.
Fourth-seeded Alexander Bublik had a tougher time in his match against Marton Fucsovics of Hungary. The Kazakhstan native overcame six double faults and rebounded from a first-set misstep in his 2-6, 6-3, 6-4 win.
Also Wednesday, Alexei Popyrin of Australia notched a 7-6 (3), 7-6 (8), 6-1 victory over Frenchman Hugo Grenier, and Finland's Emil Ruusuvuori posted a 6-3, 6-3 win over Christopher O'Connell of Australia.
Former World No. 1 Andy Murray of Great Britain fell in a tough three-set match to Czech 18-year-old Jakub Mensik, who ousted No. 5 seed Alejandro Davidovich Fokina of Spain in the first round. Mensik needed three hours, 26 minutes to beat Murray 7-6 (6), 6-7 (3), 7-6 (4).
France's Gael Monfils eked out a 4-6, 7-5, 7-6 (2) victory over China's Zhang Zhizhen.
