The Latest: Azarenka faces Mertens in US Open quarterfinals

NEW YORK (AP) - The Latest on the U.S. Open tennis tournament (all times EDT):

10:40 p.m.

Victoria Azarenka extended her two-week surge into the quarterfinals of the U.S. Open.

Azarenka won her ninth straight match, beating No. 20 Karolina Muchova 5-7, 6-1, 6-4 for her first quarterfinal appearance at ...