The last two seeded players were knocked out of the Copa BBVA Colsanitas in second-round matches Thursday in the clay-court tournament.

Top-seeded Marina Erakovic of New Zealand was beaten 6-4, 6-4 by Edina Gallovits-Hall of Romania while No. 5 Gisela Dulko lost to Alexandra Panova of Russia 7-5, 6-2.

In two other second-round matches, Karin Knapp of Italy defeated Catalina Castano of Colombia 6-3, 2-6, 6-2, and Paula Ormaechea of Argentina won against Petra Rampre of Slovenia 6-4, 3-6, 7-6 (4).

All eight players in the quarterfinals are ranked outside the WTA's top 100.

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