Slovakia’s Dominika Cibulkova returns against Laura Siegemund of Germany during the first round tie at the Sydney International tournament yesterday. Pic/AFP

Sydney: Slovakia's World No. 6 Dominika Cibulkova dropped just two games in blistering heat to win her opening match at the Sydney International yesterday. The diminutive Cibulkova, who upset World No. 1 Angelique Kerber to win the WTA finals in Singapore last October, swept past Germany's World No. 31 Laura Siegemund 6-2, 6-0.