Frech won 6-3, 2-6, 6-4 over Arantxa Rus
in the second round of Prague on Thursday.
The No. 174-ranked Frech is a surprise quarterfinalist as she's taken advantage of a fairly easy draw to advance to her first quarterfinal of the year. The 22-year-old will take on either No. 1 seed Simona Halep
or Barbora Brejcikova next.