Italy's Alberta Brianti defeated Pavlyuchenkova 6-3, 4-0, as the promising Russian retired with a right shoulder injury during the second set.
Rezai rolled over Kazakhstan's Galina Voskoboeva 6-2, 6-4 and Italian favorite Roberta Vinci beat Spaniard Lourdes Dominguez Lino 4-6, 6-4, 7-6 (7-3).
Additional first-round wins saw Belarusian Olga Govortsova beat Italian Maria Elena Camerin 6-3, 6-1 and American Varvara Lepchenko beat Italian wild card Corinna Dentoni 6-3, 6-2.
|Additional Sports News Stories|
NEW YORK, May 21 (UPI) --U.S. hip-hop mogul Jay-Z says his wife Beyonce is not pregnant with their second child, despite persistent rumors claiming she is.
WASHINGTON, May 21 (UPI) --Apple Inc.'s stateless subsidiaries beyond any taxing authority's reach are not a tax-avoidance trick, the U.S. company's top executive is to testify Tuesday.