Top-seeded Vera Zvonareva of Russia lost in the first round of the Pattaya Women's Open on Tuesday, routed 6-1, 6-3 by Paola Suarez of Argentina. Suarez, a No. 1 doubles player in 2002 who was ranked No. 9 in singles in 2004, avenged a first-round loss to Zvonareva last month in New Zealand. Suarez was slowed by injuries much of last year and this was her second match since a hip operation.