ATP roundup: Americans advance to semis at United Cup

The United States swept China in Perth on Wednesday to punch their ticket to the semifinals of the United Cup in Australia.

No. 4-ranked Taylor Fritz recorded a 6-4, 6-4 win over China's Zhizhen Zhang and Coco Gauff scored a 7-6 (4), 6-2 victory over Shuai Zhang in singles. The Americans completed the sweep after Desirae Krawczyk and Robert Galloway posted a 6-3, 6-7 (1), 10-3 win in mixed doubles over Zhang and Fajing Sun.

The United States joined Kazakhstan in the semis where it will face either Italy or Czechnia.

Elena Rybakina breezed to victory and Alexander Shevchenko logged a three-set win to highlight Kazakhstan's 2-1 victory over Germany. Also, Katie Boulter secured a 6-2, 6-1 win over Australia's Olivia Gadecki to propel Great Britain into the quarterfinals

Brisbane International

Second-seeded Grigor Dmitrov of Bulgaria fired 12 aces en route to a 6-2, 7-6 (5) win over Aussie Aleksandar Vukic in a second-round match in Australia.

Eighth-seeded Jordan Thompson won 76 percent of his first-serve points and saved six of seven break points in a 7-5, 6-3 win over Alex Michelsen.

Czech Jiri Lehecka posted a 6-2, 6-7 (5), 6-4 win over Japan's Yoshihito Nishioka and Chile's Nicolas Jarry cruised to a 6-2, 6-3 victory over Frenchman Benjamin Bonzi.

Hong Kong Open

Japan's Kei Nishikori rallied to reach the quarterfinals with a 4-6, 6-3, 7-5 win over third-seeded Karen Khachanov of Russia.

Nishikori overcame seven aces by Khachanov and benefited from five double faults from his foe to win the match in 2 hours, 9 minutes.

Fourth-seeded Arthur Fils of France fired six aces in his 7-6 (7), 6-4 win over Zizou Bergs of Belgium.

--Field Level Media