Fourth-seeded Russian Elena Dementieva and sixth-seeded Swiss favorite Patty Schnyder secured quarterfinal berths, while Bulgarian veteran Magdalena Maleeva capped her career with a second-round loss Wednesday at the $1.3 million Zurich Open. The 30-year-old Maleeva went out a loser at the hands of the lefthanded Schnyder 6-3, 6-2 at Hallenstadion. "I have really enjoyed my time in tennis," Maleeva said. "I want to thank everyone, especially the fans, for their support over the years, and I look forward to my new life beyond tennis." Maleeva, who turned pro back in 1989, captured 10 career singles titles in 21 finals on the circuit, with her last championship coming in 2003. She won this Zurich event in 1994. The capable Maleeva also secured five doubles crows on tour. In other second-round action, the fourth-seeded Dementieva overcame France's Nathalie Dechy 5-7, 6-2, 6-4, while another Russian, seventh-seeded Anastasia Myskina, mauled Italian Silvia Farina Elia 6-1, 6-4. Dementieva and Myskina will square off in a marquee all-Russian quarter. Dementieva beat Myskina in a quarterfinal in Moscow last week. In opening-round play, fifth-seeded Russian Nadia Petrova got past Spanish veteran Conchita Martinez 6-4, 7-6 (7-5), Francesca Schiavone outlasted fellow Italian Roberta Vinci 5-7, 6-2, 6-1 and Italian Flavia Pennetta came from behind to beat Czech Kveta Peschke 1-6, 6-1, 6-4. Petrova was last week's Bangkok runner-up to Czech Nicole Vaidisova, while Schiavone gave way to Mary Pierce in the finale at the Kremlin Cup. Pierce, slated as the third seed here in Zurich, pulled out on Wednesday, citing a right quadriceps injury suffered in Moscow over the weekend. The French star was replaced in the draw by Bulgarian lucky-loser Sesil Karatantcheva, who received a bye into the second round. This week's top-two-seeds -- American Lindsay Davenport and France's Amelie Mauresmo -- will see their first action of the week here on Thursday. Davenport will encounter Slovakian Daniela Hantuchova, while Mauresmo will meet Slovenian Katarina Srebotnik. Davenport titled here in 1997, 1998 and 2001 and was the runner-up in 2000 and 2002. Davenport would replace Russian Maria Sharapova atop the world rankings next week with a victory over the dangerous Hantuchova. The 2005 Zurich winner will collect $189,000.