"It's important for me to win a few matches at the beginning of the season,'' the Czech Republic's Benesova said. "My game is going pretty good so far - the semis here is not bad - we'll see if it can be better.''
Ranked 43rd at the end of 2008, Benesova is the highest-ranked player remaining in the tournament after all the seeded players were ousted in the first two rounds.
Rybarikova, who beat top-seeded Flavia Pennetta of Italy in the second round, followed with a 6-0, 1-6, 7-6 (7) quarterfinal win over Melinda Czink of Hungary.
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