BOGOTÁ, Colombia - The seeds made a seamless start at the XVIII Copa BBVA Colsanitas on Monday, with all four who were in action winning through to the second round of the first clay court event of the 2010 season.

First through was No.3 seed Sara Errani of Italy, who beat Anastasiya Yakimova of Belarus, 60 64. Sixth-seeded Czech Sandra Zahlavova also advanced over Alexandra Panova in straight sets, although No.5 seed Angelique Kerber needed three to get past Sharon Fichman, as did No.8 seed Arantxa Parra Santonja, who defeated Olga Savchuk after dropping the first set tie-break.

Unseeded winners included Czech Petra Cetkovska, who edged 18-year-old Peruvian wildcard Bianca Botto in two tight sets, 64 75; and Romania's Edina Gallovits, who breezed past 2006 champion Lourdes Domínguez Lino of Spain, 62 61.

The qualifying competition was also completed on Monday, with Corinna Dentoni, Kristina Antoniychuk, Greta Arn and Laura Pous Tio securing main draw berths.

Top seed and 2009 runner-up Gisela Dulko - South America's highest-ranked player - makes her first appearance on Tuesday. The Argentinean world No.35 plays Mathilde Johansson of France. Paraguayan touring mom Rossana de los Ríos also plays her opening round match, against Masa Zec Peskiric of Slovenia, while Colombian favorite Catalina Castaño takes on fourth seed Polona Hercog.