Hingis, the top seed, breezed into the third round with a 6-3, 6-2 victory over Gala Leon Garcia of Spain.

Novotna, the No. 2 seed, was upset by Romania's Ruxandra Dragomir 7-6 (7-4), 6-2 on a day when rain again disrupted play.

Pierce, the No. 5 seed, pulled out of the $1 million clay-court event with a thigh injury. Pierce had reached the final of her last two tournaments, in Hamburg and Rome, and lost both times to Venus Williams.

No. 4 Arantxa Sanchez-Vicario of Spain outlasted Corina Morariu in three grueling sets. Sanchez-Vicario, the French Open champion, squandered a 5-1 lead in the second set and four match points. But she rallied from a 4-0 deficit in the third set to win 7-6 (7-0), 6-7 (5-7), 7-6 (8-6) victory.

Another seed to fall was No. 11 Dominique van Roost, who lost 6-3, 7-5, to Russia's Elena Likhovtseva.

In a first-round match, Jennifer Capriati beat Amanda Hopmans, a lucky loser from the Netherlands, 6-4, 4-6, 6-1.