Defending champion Tommy Robredo and Teimuraz Gabashvili won second-round matches in straight sets Wednesday to reach the quarterfinals at the Swedish Open. Robredo, a Spaniard seeded third in the clay-court tournament, beat Peter Luczak of Australia 6-2, 6-3. Gabashvili, an unseeded Russian, defeated Bjorn Pau of Germany 6-3, 6-2. Robredo is playing in Bastad for the ninth straight year. Two other Spaniards, Daniel Gimeno-Traver and fifth-seeded Nicolas Almagro, also won in straight sets to reach the second round. Gimeno-Traver ousted Federico Gil of Portugal 6-1, 6-4 and Almagro knocked off two-time major champion Marat Safin of Russia 6-3, 7-6 (6). Spanish players have won the last four Swedish Opens. Rafael Nadal was the winner in 2005, Robredo won his first title in 2006 and David Ferrer prevailed in 2007. Second-seeded Robin Soderling of Sweden was to play Kristof Vliegen of Belgium during an evening match -- only the second under lights in the tournament's 62-year history. Soderling received a first-round bye with the three other highest seeds. 